Re: [M100] New zebra strips for M100 display ? any interest?

[Kevin Becker]

I have one M100 that could potentially use new zebra strips.  I’d be down for 4 
pairs as well just to have some on hand and help chip away at the order.

> On Jul 7, 2021, at 5:39 PM, Jamie Nichol  wrote:
> 
> Peter,
> 
> Looks like a pair of new zebra strips will cost $6 with usps shipping to 
> contiguous USA.
> 
> Manufacturer is fujipoly.  Better quality supplier.
> 
> I’d love to sign you up for a dozen, once testing looks good.
> 
> Anyone else interested at this price?
> 
> —Jamie
> On Jul 7, 2021, 5:28 PM -0400, Peter Noeth , wrote:
> My experience with zebra strips, in general are threefold:
>  1. The silicon can "outgas" its oils over time, if they were not baked 
> correctly at manufacture. This oil can contaminate the carbon layers on the 
> "face ends" where the strip contacts the glass / PCB, causing open 
> connections. 
>  2. The face ends of the carbon layers are not always friendly to cleaning. 
> The conductivity of the carbon layers can be lost, especially after 5 years.
>  3. The silicon can lose its elasticity, causing open connections. This 
> mostly manifests itself during reassembly of an LCD display module if reusing 
> the original zebra strips. Especially after 40 years of questionable storage 
> conditions.
> When disassembly of an LCD display module was necessary, new zebra strips 
> were always used during reassembly. This just removes a lot of potential 
> problems, especially if you warrant your work.
> 
> So having a source for replacement zebra strips for the notebook computers 
> would be handy, but at a minimum production quantity of 1000, you would 
> probably still have 800 when you die. Maybe not economical, from a business 
> investment, but maybe from a passion standpoint.
> 
> I would buy a dozen :-)
> 
> Regards,
> 
> Peter
> 
> --
> 
> Message: 3
> Date: Tue, 6 Jul 2021 19:33:53 -0400
> From: Jamie Nichol https://mailto:jgnic...@gmail.com/>>
> To: m...@bitchin100.com Subject: [M100] 
> New zebra strips for M100 display
> =?utf-8?Q?=E2=80=94_?=any interest?
> Message-ID: 
> Content-Type: text/plain; charset="utf-8"
> 
> Hey All,
> 
> I do consumer product R as my day job.??I?ve admired the M100 as a 
> brilliant product for the past decade or so, and just picked up a really sad 
> example that I?m trying to resuscitate.
> 
> A couple of weeks ago I had a some fine-pitch prototype zebra strips made up 
> to fit the M100 LCD (see pic).??The first prototypes are about 0.3mm too 
> tall.??I?ll likely have another set of prototypes run with an adjusted height.
> 
> I have two questions:
> 
> Is there enough interest here on the list to justify an order of 1000 pieces 
> or so???(Likely price is a few dollars each strip ? more to come on price.)
> 
> Do any of you have dead LCDs that you would be wiling to sacrifice to the 
> testing gods???I would like to see ten or so LCDs improved by an upgrade to 
> the new strips before placing a bigger order.
> 
> ?Jamie
> 
> 
> -- next part --
> An HTML attachment was scrubbed...
> URL: 
>   
> >
> -- next part --
> A non-text attachment was scrubbed...
> Name: Zebra_Strip_Prototypes.jpg
> Type: image/jpeg
> Size: 218023 bytes
> Desc: not available
> URL: 
>   
> >
> 

Re: [M100] New zebra strips for M100 display ? any interest?

[Stephen Adolph]

you can count me in for some quantity.  Are these strips usable for T102
and M100?  Assume 8201, M10, 8300, KC85 also.
What about T200?
..steve

On Wed, Jul 7, 2021 at 5:48 PM Jamie Nichol  wrote:

> Peter,
>
> Looks like a pair of new zebra strips will cost $6 with usps shipping to
> contiguous USA.
>
> Manufacturer is fujipoly.  Better quality supplier.
>
> I’d love to sign you up for a dozen, once testing looks good.
>
> Anyone else interested at this price?
>
> —Jamie
> On Jul 7, 2021, 5:28 PM -0400, Peter Noeth , wrote:
>
> My experience with zebra strips, in general are threefold:
>  1. The silicon can "outgas" its oils over time, if they were not baked
> correctly at manufacture. This oil can contaminate the carbon layers on the
> "face ends" where the strip contacts the glass / PCB, causing open
> connections.
>  2. The face ends of the carbon layers are not always friendly to
> cleaning. The conductivity of the carbon layers can be lost, especially
> after 5 years.
>  3. The silicon can lose its elasticity, causing open connections. This
> mostly manifests itself during reassembly of an LCD display module if
> reusing the original zebra strips. Especially after 40 years of
> questionable storage conditions.
> When disassembly of an LCD display module was necessary, new zebra strips
> were always used during reassembly. This just removes a lot of
> potential problems, especially if you warrant your work.
>
> So having a source for replacement zebra strips for the notebook computers
> would be handy, but at a minimum production quantity of 1000, you would
> probably still have 800 when you die. Maybe not economical, from a business
> investment, but maybe from a passion standpoint.
>
> I would buy a dozen :-)
>
> Regards,
>
> Peter
>
> --
>
> Message: 3
> Date: Tue, 6 Jul 2021 19:33:53 -0400
> From: Jamie Nichol https://mailto:jgnic...@gmail.com>
> >
> To: m...@bitchin100.com Subject:
> [M100] New zebra strips for M100 display
> =?utf-8?Q?=E2=80=94_?=any interest?
> Message-ID: 
> Content-Type: text/plain; charset="utf-8"
>
> Hey All,
>
> I do consumer product R as my day job.??I?ve admired the M100 as a
> brilliant product for the past decade or so, and just picked up a really
> sad example that I?m trying to resuscitate.
>
> A couple of weeks ago I had a some fine-pitch prototype zebra strips made
> up to fit the M100 LCD (see pic).??The first prototypes are about 0.3mm too
> tall.??I?ll likely have another set of prototypes run with an adjusted
> height.
>
> I have two questions:
>
> Is there enough interest here on the list to justify an order of 1000
> pieces or so???(Likely price is a few dollars each strip ? more to come on
> price.)
>
> Do any of you have dead LCDs that you would be wiling to sacrifice to the
> testing gods???I would like to see ten or so LCDs improved by an upgrade to
> the new strips before placing a bigger order.
>
> ?Jamie
>
>
> -- next part --
> An HTML attachment was scrubbed...
> URL: <
> http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/attachments/20210706/ba6c5a49/attachment-0001.html
> >
> -- next part --
> A non-text attachment was scrubbed...
> Name: Zebra_Strip_Prototypes.jpg
> Type: image/jpeg
> Size: 218023 bytes
> Desc: not available
> URL: <
> http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/attachments/20210706/ba6c5a49/attachment-0001.jpg
> >
>
>

Re: [M100] New zebra strips for M100 display ? any interest?

[Jeffrey Birt]

I will also pick some up to have on hand, just in case. If I can help test let 
me know.

 

Jeff Birt

 

 

From: M100  On Behalf Of Jamie Nichol
Sent: Wednesday, July 7, 2021 4:39 PM
To: Model 100 Discussion ; m...@bitchin100.com
Subject: Re: [M100] New zebra strips for M100 display ? any interest?

 

Peter,

Looks like a pair of new zebra strips will cost $6 with usps shipping to 
contiguous USA.

Manufacturer is fujipoly.  Better quality supplier.

I’d love to sign you up for a dozen, once testing looks good.

Anyone else interested at this price?


—Jamie

On Jul 7, 2021, 5:28 PM -0400, Peter Noeth mailto:petern0...@gmail.com> >, wrote:

My experience with zebra strips, in general are threefold:
 1. The silicon can "outgas" its oils over time, if they were not baked 
correctly at manufacture. This oil can contaminate the carbon layers on the 
"face ends" where the strip contacts the glass / PCB, causing open connections. 
 2. The face ends of the carbon layers are not always friendly to cleaning. The 
conductivity of the carbon layers can be lost, especially after 5 years.
 3. The silicon can lose its elasticity, causing open connections. This mostly 
manifests itself during reassembly of an LCD display module if reusing the 
original zebra strips. Especially after 40 years of questionable storage 
conditions.
When disassembly of an LCD display module was necessary, new zebra strips were 
always used during reassembly. This just removes a lot of potential problems, 
especially if you warrant your work.

So having a source for replacement zebra strips for the notebook computers 
would be handy, but at a minimum production quantity of 1000, you would 
probably still have 800 when you die. Maybe not economical, from a business 
investment, but maybe from a passion standpoint.

I would buy a dozen :-)

Regards,

Peter

--

Message: 3
Date: Tue, 6 Jul 2021 19:33:53 -0400
From: Jamie Nichol https://mailto:jgnic...@gmail.com> >
To: m...@bitchin100.com  Subject: [M100] 
New zebra strips for M100 display
=?utf-8?Q?=E2=80=94_?=any interest?
Message-ID: 
Content-Type: text/plain; charset="utf-8"

Hey All,

I do consumer product R as my day job.??I?ve admired the M100 as a brilliant 
product for the past decade or so, and just picked up a really sad example that 
I?m trying to resuscitate.

A couple of weeks ago I had a some fine-pitch prototype zebra strips made up to 
fit the M100 LCD (see pic).??The first prototypes are about 0.3mm too 
tall.??I?ll likely have another set of prototypes run with an adjusted height.

I have two questions:

Is there enough interest here on the list to justify an order of 1000 pieces or 
so???(Likely price is a few dollars each strip ? more to come on price.)

Do any of you have dead LCDs that you would be wiling to sacrifice to the 
testing gods???I would like to see ten or so LCDs improved by an upgrade to the 
new strips before placing a bigger order.

?Jamie


-- next part --
An HTML attachment was scrubbed...
URL: 

-- next part --
A non-text attachment was scrubbed...
Name: Zebra_Strip_Prototypes.jpg
Type: image/jpeg
Size: 218023 bytes
Desc: not available
URL: 

Re: [M100] M100 / 102 Wanted

[Jeffrey Birt]

If you decide you want to try and get it fixed let me know.

 

Jeff

 

 

From: M100  On Behalf Of
lloydel...@comcast.net
Sent: Wednesday, July 7, 2021 1:03 PM
To: m...@bitchin100.com
Subject: Re: [M100] M100 / 102 Wanted

 

Thanks for the information.   What you are describing sounds a bit more
intense than what I'm willing to try at this time.An option I might
consider in the future is to sell it as is and try and acquire one without
any display problems.  I understand that as time marches on, such an
acquisition might be difficult but I guess that is a risk.

 

As I mentioned, I can live with it as is (at least for now).

 

Lloyd

 

 

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of Jeffrey Birt
Sent: Wednesday, July 7, 2021 6:38 AM
To: m...@bitchin100.com  
Subject: Re: [M100] M100 / 102 Wanted

 

The partial missing column is one driver output's worth. That might just be
a bad contact or a bad driver chip. The missing row troubles me more as it
could signal a bad LCD glass. I have a T102 that has the same symptom and
tracked it down to the glass. Interestingly the LCD glass is laid out
symmetrically. You can take it out of the frame and rotate 180degrees and if
the horizontal line is also moved you know you have a bad glass. Getting the
LCD glass lined up correctly on the PCB when putting it all back together
can be tricky though.

 

Jeff Birt

 

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of
lloydel...@comcast.net  
Sent: Tuesday, July 6, 2021 8:42 PM
To: m...@bitchin100.com  
Subject: Re: [M100] M100 / 102 Wanted

 

The problem is annoying but it is something I can live with.   I attached a
picture illustrating the problem.

 

On the picture, you can see that the top of the 6th line has a horizontal
roll of pixels out.  It is most noticeable on the number, "5" where it took
out the top of this number.

 

The vertical column of dead pixels is on the column labeled, "Dist".   It
affects the first four lines of the display and you can see where the
number, "9" is affected.

 

Lloyd

 

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of Jeffrey Birt
Sent: Tuesday, July 6, 2021 6:00 PM
To: m...@bitchin100.com  
Subject: Re: [M100] M100 / 102 Wanted

 

Bum LCDs are often the most difficult thing to fix. If the problem is a
corroded connection to the LCD glass there is a 50/50 chance of fixing it
and getting the glass lined back up properly. I have also seen a missing
horizontal line be due to a bad LCD glass. The driver ICs can also fail and
they have to be scrounged from other LCDs are they are an odd/smaller
package that seems to be unique to the M100/T102.

 

Jeff Birt

 

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of
lloydel...@comcast.net  
Sent: Tuesday, July 6, 2021 3:47 PM
To: m...@bitchin100.com  
Subject: Re: [M100] M100 / 102 Wanted

 

I wish I had known about this group prior to forking over $200 to eBay for a
M100 in "mint" condition.

 

The seller's definition of "mint" differed a bit from mine in that a
horizontal row of pixels is out and there is a column of pixels that is out
for the top 1/3 of the column.

 

Do you fix these and if so, how much would it cost?   The Y2K updated ROM
sounds useful as well.

 

Lloyd

 

Re: [M100] New zebra strips for M100 display ? any interest?

[lloydelmer]

By the same logic, put me down for 4 pairs.

 

Lloyd

 

From: M100  On Behalf Of Scott McDonnell
Sent: Wednesday, July 7, 2021 5:00 PM
To: m...@bitchin100.com; Model 100 Discussion 
Subject: Re: [M100] New zebra strips for M100 display ? any interest?

 

I am in for 4 pairs. Not a huge order, I know, but I only have the 2 computers 
and don't do any repairs for others.

 

 Original message 

From: Jamie Nichol mailto:jgnic...@gmail.com> > 

Date: 7/7/21 5:39 PM (GMT-05:00) 

To: Model 100 Discussion mailto:m100@lists.bitchin100.com> >, m...@bitchin100.com 
  

Subject: Re: [M100] New zebra strips for M100 display ? any interest? 

 

Peter,

Looks like a pair of new zebra strips will cost $6 with usps shipping to 
contiguous USA.

Manufacturer is fujipoly.  Better quality supplier.

I’d love to sign you up for a dozen, once testing looks good.

Anyone else interested at this price?


—Jamie

On Jul 7, 2021, 5:28 PM -0400, Peter Noeth mailto:petern0...@gmail.com> >, wrote:

My experience with zebra strips, in general are threefold:
 1. The silicon can "outgas" its oils over time, if they were not baked 
correctly at manufacture. This oil can contaminate the carbon layers on the 
"face ends" where the strip contacts the glass / PCB, causing open connections. 
 2. The face ends of the carbon layers are not always friendly to cleaning. The 
conductivity of the carbon layers can be lost, especially after 5 years.
 3. The silicon can lose its elasticity, causing open connections. This mostly 
manifests itself during reassembly of an LCD display module if reusing the 
original zebra strips. Especially after 40 years of questionable storage 
conditions.
When disassembly of an LCD display module was necessary, new zebra strips were 
always used during reassembly. This just removes a lot of potential problems, 
especially if you warrant your work.

So having a source for replacement zebra strips for the notebook computers 
would be handy, but at a minimum production quantity of 1000, you would 
probably still have 800 when you die. Maybe not economical, from a business 
investment, but maybe from a passion standpoint.

I would buy a dozen :-)

Regards,

Peter

--

Message: 3
Date: Tue, 6 Jul 2021 19:33:53 -0400
From: Jamie Nichol https://mailto:jgnic...@gmail.com> >
To: m...@bitchin100.com  Subject: [M100] 
New zebra strips for M100 display
=?utf-8?Q?=E2=80=94_?=any interest?
Message-ID: 
Content-Type: text/plain; charset="utf-8"

Hey All,

I do consumer product R as my day job.??I?ve admired the M100 as a brilliant 
product for the past decade or so, and just picked up a really sad example that 
I?m trying to resuscitate.

A couple of weeks ago I had a some fine-pitch prototype zebra strips made up to 
fit the M100 LCD (see pic).??The first prototypes are about 0.3mm too 
tall.??I?ll likely have another set of prototypes run with an adjusted height.

I have two questions:

Is there enough interest here on the list to justify an order of 1000 pieces or 
so???(Likely price is a few dollars each strip ? more to come on price.)

Do any of you have dead LCDs that you would be wiling to sacrifice to the 
testing gods???I would like to see ten or so LCDs improved by an upgrade to the 
new strips before placing a bigger order.

?Jamie


-- next part --
An HTML attachment was scrubbed...
URL: 

-- next part --
A non-text attachment was scrubbed...
Name: Zebra_Strip_Prototypes.jpg
Type: image/jpeg
Size: 218023 bytes
Desc: not available
URL: 

Re: [M100] New zebra strips for M100 display ? any interest?

[Scott McDonnell]

I am in for 4 pairs. Not a huge order, I know, but I only have the 2 computers 
and don't do any repairs for others.
 Original message From: Jamie Nichol  Date: 
7/7/21  5:39 PM  (GMT-05:00) To: Model 100 Discussion 
, m...@bitchin100.com Subject: Re: [M100] New zebra 
strips for M100 display ? any interest? 

Peter,

Looks like a pair of new zebra strips will cost $6 with usps shipping to 
contiguous USA.

Manufacturer is fujipoly.  Better quality supplier.

I’d love to sign you up for a dozen, once testing looks good.

Anyone else interested at this price?


—Jamie

On Jul 7, 2021, 5:28 PM -0400, Peter Noeth , wrote:
My experience with zebra strips, in general are threefold:
 1. The silicon can "outgas" its oils over time, if they were not baked 
correctly at manufacture. This oil can contaminate the carbon layers on the 
"face ends" where the strip contacts the glass / PCB, causing open connections. 
 2. The face ends of the carbon layers are not always friendly to cleaning. The 
conductivity of the carbon layers can be lost, especially after 5 years.
 3. The silicon can lose its elasticity, causing open connections. This mostly 
manifests itself during reassembly of an LCD display module if reusing the 
original zebra strips. Especially after 40 years of questionable storage 
conditions.
When disassembly of an LCD display module was necessary, new zebra strips were 
always used during reassembly. This just removes a lot of potential problems, 
especially if you warrant your work.

So having a source for replacement zebra strips for the notebook computers 
would be handy, but at a minimum production quantity of 1000, you would 
probably still have 800 when you die. Maybe not economical, from a business 
investment, but maybe from a passion standpoint.

I would buy a dozen :-)

Regards,

Peter

--

Message: 3
Date: Tue, 6 Jul 2021 19:33:53 -0400
From: Jamie Nichol 
To: m100@bitchin100.comSubject: [M100] New zebra strips for M100 display
        =?utf-8?Q?=E2=80=94_?=any interest?
Message-ID: 
Content-Type: text/plain; charset="utf-8"

Hey All,

I do consumer product R as my day job.??I?ve admired the M100 as a brilliant 
product for the past decade or so, and just picked up a really sad example that 
I?m trying to resuscitate.

A couple of weeks ago I had a some fine-pitch prototype zebra strips made up to 
fit the M100 LCD (see pic).??The first prototypes are about 0.3mm too 
tall.??I?ll likely have another set of prototypes run with an adjusted height.

I have two questions:

Is there enough interest here on the list to justify an order of 1000 pieces or 
so???(Likely price is a few dollars each strip ? more to come on price.)

Do any of you have dead LCDs that you would be wiling to sacrifice to the 
testing gods???I would like to see ten or so LCDs improved by an upgrade to the 
new strips before placing a bigger order.

?Jamie


-- next part --
An HTML attachment was scrubbed...
URL: 

-- next part --
A non-text attachment was scrubbed...
Name: Zebra_Strip_Prototypes.jpg
Type: image/jpeg
Size: 218023 bytes
Desc: not available
URL: 

Re: [M100] New zebra strips for M100 display ? any interest?

[Jamie Nichol]

Peter,

Looks like a pair of new zebra strips will cost $6 with usps shipping to 
contiguous USA.

Manufacturer is fujipoly.  Better quality supplier.

I’d love to sign you up for a dozen, once testing looks good.

Anyone else interested at this price?

—Jamie
On Jul 7, 2021, 5:28 PM -0400, Peter Noeth , wrote:
> My experience with zebra strips, in general are threefold:
>  1. The silicon can "outgas" its oils over time, if they were not baked 
> correctly at manufacture. This oil can contaminate the carbon layers on the 
> "face ends" where the strip contacts the glass / PCB, causing open 
> connections.
>  2. The face ends of the carbon layers are not always friendly to cleaning. 
> The conductivity of the carbon layers can be lost, especially after 5 years.
>  3. The silicon can lose its elasticity, causing open connections. This 
> mostly manifests itself during reassembly of an LCD display module if reusing 
> the original zebra strips. Especially after 40 years of questionable storage 
> conditions.
> When disassembly of an LCD display module was necessary, new zebra strips 
> were always used during reassembly. This just removes a lot of potential 
> problems, especially if you warrant your work.
>
> So having a source for replacement zebra strips for the notebook computers 
> would be handy, but at a minimum production quantity of 1000, you would 
> probably still have 800 when you die. Maybe not economical, from a business 
> investment, but maybe from a passion standpoint.
>
> I would buy a dozen :-)
>
> Regards,
>
> Peter
>
> > --
> >
> > Message: 3
> > Date: Tue, 6 Jul 2021 19:33:53 -0400
> > From: Jamie Nichol 
> > To: m100@bitchin100.comSubject: [M100] New zebra strips for M100 display
> >         =?utf-8?Q?=E2=80=94_?=any interest?
> > Message-ID: 
> > Content-Type: text/plain; charset="utf-8"
> >
> > Hey All,
> >
> > I do consumer product R as my day job.??I?ve admired the M100 as a 
> > brilliant product for the past decade or so, and just picked up a really 
> > sad example that I?m trying to resuscitate.
> >
> > A couple of weeks ago I had a some fine-pitch prototype zebra strips made 
> > up to fit the M100 LCD (see pic).??The first prototypes are about 0.3mm too 
> > tall.??I?ll likely have another set of prototypes run with an adjusted 
> > height.
> >
> > I have two questions:
> >
> > Is there enough interest here on the list to justify an order of 1000 
> > pieces or so???(Likely price is a few dollars each strip ? more to come on 
> > price.)
> >
> > Do any of you have dead LCDs that you would be wiling to sacrifice to the 
> > testing gods???I would like to see ten or so LCDs improved by an upgrade to 
> > the new strips before placing a bigger order.
> >
> > ?Jamie
> >
> >
> > -- next part --
> > An HTML attachment was scrubbed...
> > URL: 
> > 
> > -- next part --
> > A non-text attachment was scrubbed...
> > Name: Zebra_Strip_Prototypes.jpg
> > Type: image/jpeg
> > Size: 218023 bytes
> > Desc: not available
> > URL: 
> > 
> >

Re: [M100] turbo Pascal and M100

[John R. Hogerhuis]

That's cool, particularly for your Z80 upgrade.

Is there a UCSD p-system 8080/85 CP/M compatible?

-- John.

Re: [M100] M100 / 102 Wanted

[lloydelmer]

Thanks for the information.   What you are describing sounds a bit more
intense than what I'm willing to try at this time.An option I might
consider in the future is to sell it as is and try and acquire one without
any display problems.  I understand that as time marches on, such an
acquisition might be difficult but I guess that is a risk.

 

As I mentioned, I can live with it as is (at least for now).

 

Lloyd

 

 

From: M100  On Behalf Of Jeffrey Birt
Sent: Wednesday, July 7, 2021 6:38 AM
To: m...@bitchin100.com
Subject: Re: [M100] M100 / 102 Wanted

 

The partial missing column is one driver output's worth. That might just be
a bad contact or a bad driver chip. The missing row troubles me more as it
could signal a bad LCD glass. I have a T102 that has the same symptom and
tracked it down to the glass. Interestingly the LCD glass is laid out
symmetrically. You can take it out of the frame and rotate 180degrees and if
the horizontal line is also moved you know you have a bad glass. Getting the
LCD glass lined up correctly on the PCB when putting it all back together
can be tricky though.

 

Jeff Birt

 

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of
lloydel...@comcast.net  
Sent: Tuesday, July 6, 2021 8:42 PM
To: m...@bitchin100.com  
Subject: Re: [M100] M100 / 102 Wanted

 

The problem is annoying but it is something I can live with.   I attached a
picture illustrating the problem.

 

On the picture, you can see that the top of the 6th line has a horizontal
roll of pixels out.  It is most noticeable on the number, "5" where it took
out the top of this number.

 

The vertical column of dead pixels is on the column labeled, "Dist".   It
affects the first four lines of the display and you can see where the
number, "9" is affected.

 

Lloyd

 

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of Jeffrey Birt
Sent: Tuesday, July 6, 2021 6:00 PM
To: m...@bitchin100.com  
Subject: Re: [M100] M100 / 102 Wanted

 

Bum LCDs are often the most difficult thing to fix. If the problem is a
corroded connection to the LCD glass there is a 50/50 chance of fixing it
and getting the glass lined back up properly. I have also seen a missing
horizontal line be due to a bad LCD glass. The driver ICs can also fail and
they have to be scrounged from other LCDs are they are an odd/smaller
package that seems to be unique to the M100/T102.

 

Jeff Birt

 

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of
lloydel...@comcast.net  
Sent: Tuesday, July 6, 2021 3:47 PM
To: m...@bitchin100.com  
Subject: Re: [M100] M100 / 102 Wanted

 

I wish I had known about this group prior to forking over $200 to eBay for a
M100 in "mint" condition.

 

The seller's definition of "mint" differed a bit from mine in that a
horizontal row of pixels is out and there is a column of pixels that is out
for the top 1/3 of the column.

 

Do you fix these and if so, how much would it cost?   The Y2K updated ROM
sounds useful as well.

 

Lloyd

 

[M100] turbo Pascal and M100

[Stephen Adolph]

https://www.vcfed.org/forum/forum/genres/cp-m-and-mp-m/77676-turbo-pascal-can-it-be-set-up-to-compile-into-8080/page8#post1215807

It may be possible soon to write an application for M100 CP/M in Turbo
Pascal, and compile it to run on 8085.

This is interesting because
1.  while you will still need a Z80 to run Turbo Pascal, the end product
could run on stock 8085 M100 with REXCPM
2.  It is possible to embed a Z80 in an M100.
3.  it might not be too big a lift to get Z80 CPU support in Virtual T.

Anyhow, an interesting development.
Steve

Re: [M100] New zebra strips for M100 display — any interest?

[Jamie Nichol]

Josh,

Thank you!

—Jamie
On Jul 7, 2021, 9:54 AM -0400, Josh Malone , wrote:
> I would absolutely buy a small stock of new zebras for the M100! I've
> been contemplating such a project myself for years. Over the last 30
> years, the zebras have deformed to where they seem to take permanent
> deformation from the copper tracks on the PCB and I've never been able
> to get them back together again after cleaning. Having new parts
> available would be terrific.
>
> Let me see how many problematic LCDs I have in my "parts machines"
> right now and I'll get back to you.
>
> -Josh
>
> > From: M100  On Behalf Of Jamie Nichol
> > Sent: Tuesday, July 6, 2021 6:34 PM
> > To: m...@bitchin100.com
> > Subject: [M100] New zebra strips for M100 display — any interest?
> >
> >
> > Hey All,
> >
> > I do consumer product R as my day job. I’ve admired the M100 as a 
> > brilliant product for the past decade or so, and just picked up a really 
> > sad example that I’m trying to resuscitate.
> >
> > A couple of weeks ago I had a some fine-pitch prototype zebra strips made 
> > up to fit the M100 LCD (see pic). The first prototypes are about 0.3mm too 
> > tall. I’ll likely have another set of prototypes run with an adjusted 
> > height.
> >
> > I have two questions:
> >
> > Is there enough interest here on the list to justify an order of 1000 
> > pieces or so? (Likely price is a few dollars each strip — more to come on 
> > price.)
> >
> > Do any of you have dead LCDs that you would be wiling to sacrifice to the 
> > testing gods? I would like to see ten or so LCDs improved by an upgrade to 
> > the new strips before placing a bigger order.
> >
> > —Jamie

Re: [M100] New zebra strips for M100 display — any interest?

[Josh Malone]

I would absolutely buy a small stock of new zebras for the M100! I've
been contemplating such a project myself for years. Over the last 30
years, the zebras have deformed to where they seem to take permanent
deformation from the copper tracks on the PCB and I've never been able
to get them back together again after cleaning. Having new parts
available would be terrific.

Let me see how many problematic LCDs I have in my "parts machines"
right now and I'll get back to you.

-Josh

> From: M100  On Behalf Of Jamie Nichol
> Sent: Tuesday, July 6, 2021 6:34 PM
> To: m...@bitchin100.com
> Subject: [M100] New zebra strips for M100 display — any interest?
>
>
> Hey All,
>
> I do consumer product R as my day job.  I’ve admired the M100 as a 
> brilliant product for the past decade or so, and just picked up a really sad 
> example that I’m trying to resuscitate.
>
> A couple of weeks ago I had a some fine-pitch prototype zebra strips made up 
> to fit the M100 LCD (see pic).  The first prototypes are about 0.3mm too 
> tall.  I’ll likely have another set of prototypes run with an adjusted height.
>
> I have two questions:
>
> Is there enough interest here on the list to justify an order of 1000 pieces 
> or so?  (Likely price is a few dollars each strip — more to come on price.)
>
> Do any of you have dead LCDs that you would be wiling to sacrifice to the 
> testing gods?  I would like to see ten or so LCDs improved by an upgrade to 
> the new strips before placing a bigger order.
>
> —Jamie

Re: [M100] M100 / 102 Wanted

[Jeffrey Birt]

The partial missing column is one driver output's worth. That might just be
a bad contact or a bad driver chip. The missing row troubles me more as it
could signal a bad LCD glass. I have a T102 that has the same symptom and
tracked it down to the glass. Interestingly the LCD glass is laid out
symmetrically. You can take it out of the frame and rotate 180degrees and if
the horizontal line is also moved you know you have a bad glass. Getting the
LCD glass lined up correctly on the PCB when putting it all back together
can be tricky though.

 

Jeff Birt

 

From: M100  On Behalf Of
lloydel...@comcast.net
Sent: Tuesday, July 6, 2021 8:42 PM
To: m...@bitchin100.com
Subject: Re: [M100] M100 / 102 Wanted

 

The problem is annoying but it is something I can live with.   I attached a
picture illustrating the problem.

 

On the picture, you can see that the top of the 6th line has a horizontal
roll of pixels out.  It is most noticeable on the number, "5" where it took
out the top of this number.

 

The vertical column of dead pixels is on the column labeled, "Dist".   It
affects the first four lines of the display and you can see where the
number, "9" is affected.

 

Lloyd

 

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of Jeffrey Birt
Sent: Tuesday, July 6, 2021 6:00 PM
To: m...@bitchin100.com  
Subject: Re: [M100] M100 / 102 Wanted

 

Bum LCDs are often the most difficult thing to fix. If the problem is a
corroded connection to the LCD glass there is a 50/50 chance of fixing it
and getting the glass lined back up properly. I have also seen a missing
horizontal line be due to a bad LCD glass. The driver ICs can also fail and
they have to be scrounged from other LCDs are they are an odd/smaller
package that seems to be unique to the M100/T102.

 

Jeff Birt

 

From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of
lloydel...@comcast.net  
Sent: Tuesday, July 6, 2021 3:47 PM
To: m...@bitchin100.com  
Subject: Re: [M100] M100 / 102 Wanted

 

I wish I had known about this group prior to forking over $200 to eBay for a
M100 in "mint" condition.

 

The seller's definition of "mint" differed a bit from mine in that a
horizontal row of pixels is out and there is a column of pixels that is out
for the top 1/3 of the column.

 

Do you fix these and if so, how much would it cost?   The Y2K updated ROM
sounds useful as well.

 

Lloyd

 

Re: [M100] M100 / 102 Wanted

[Chris Fezzler]

 That's a shame.  I'm sure in my 15-20 years here on the Club100 listserv the 
topic of screen repairs, backlighting, cleaning, etc. has been thoroughly 
discussed several times.But with all the amazing innovation happening for our 
treasured Model T format by extremely talented people, no options exist to rid 
the scourge of bad screens once and for all?
On Tuesday, July 6, 2021, 09:42:00 PM EDT, lloydel...@comcast.net 
 wrote:  
 
 
The problem is annoying but it is something I can live with.   I attached a 
picture illustrating the problem.

  

On the picture, you can see that the top of the 6th line has a horizontal roll 
of pixels out.  It is most noticeable on the number, “5” where it took out the 
top of this number.

  

The vertical column of dead pixels is on the column labeled, “Dist”.   It 
affects the first four lines of the display and you can see where the number, 
“9” is affected.

  

Lloyd

  

From: M100  On Behalf Of Jeffrey Birt
Sent: Tuesday, July 6, 2021 6:00 PM
To: m...@bitchin100.com
Subject: Re: [M100] M100 / 102 Wanted

  

Bum LCDs are often the most difficult thing to fix. If the problem is a 
corroded connection to the LCD glass there is a 50/50 chance of fixing it and 
getting the glass lined back up properly. I have also seen a missing horizontal 
line be due to a bad LCD glass. The driver ICs can also fail and they have to 
be scrounged from other LCDs are they are an odd/smaller package that seems to 
be unique to the M100/T102.

  

Jeff Birt

  

From: M100  On Behalf Of 
lloydel...@comcast.net
Sent: Tuesday, July 6, 2021 3:47 PM
To: m...@bitchin100.com
Subject: Re: [M100] M100 / 102 Wanted

  

I wish I had known about this group prior to forking over $200 to eBay for a 
M100 in “mint” condition.

  

The seller’s definition of “mint” differed a bit from mine in that a horizontal 
row of pixels is out and there is a column of pixels that is out for the top 
1/3 of the column.

  

Do you fix these and if so, how much would it cost?   The Y2K updated ROM 
sounds useful as well.

  

Lloyd