, 2020 at 7:53 PM
From: "Kevin Becker"
To: m100@lists.bitchin100.com
Subject: Re: [M100] LCD Lines
That is an interesting approach. I've taken several PC-3 pocket computers apart and reassembled them which is my only experience with elastomeric strips. I've been successful in t
That is an interesting approach. I've taken several PC-3 pocket
computers apart and reassembled them which is my only experience with
elastomeric strips. I've been successful in that regard on the smaller
PC-3 scale. I have to admit, I'm not eager to disassemble the LCD on
this M100 so I may
I have not had any success removing the LCD bezel so would not recommend
that approach. It was hard for me to get the elastomer strip to re-conform
on the PCB making things worse in the end. I tried it on two different
LCDs so perhaps I need more practice :)
One trick that works for me is to
wouldn't be too
hard to send off some measurements and get a batch made.
-- Original Message --
From: "Josh Malone"
To: m...@bitchin100.com
Sent: 3/3/2020 4:32:20 PM
Subject: Re: [M100] LCD Lines
On Tue, Mar 3, 2020 at 4:28 PM Kevin Becker
wrote:
Did he do PC3 screens too?
On Tue, Mar 3, 2020 at 4:28 PM Kevin Becker wrote:
> Did he do PC3 screens too? I've got a PC3 that could use a new screen...
>
Yes:
https://www.tindie.com/products/halfbakedmaker/lcd-replacement-for-trs-80-pc-3-sharp-pc-125x/
>
Did he do PC3 screens too? I've got a PC3 that could use a new
screen...
-- Original Message --
From: "Josh Malone"
To: m...@bitchin100.com
Sent: 3/3/2020 4:25:58 PM
Subject: Re: [M100] LCD Lines
On Tue, Mar 3, 2020 at 10:10 AM Stephen Adolph
wrote:
I recently had very
On Tue, Mar 3, 2020 at 10:10 AM Stephen Adolph wrote:
> I recently had very good luck fixing an LCD.
>
> With careful inspection with a microscope I found corrosion on the traces
> that drive the LCD from a particular driver.
> The corrosion was right under the rubber conducting gasket. I
>
: Re: [M100] LCD Lines
I've seen your part 1 of this repair and I believe you also saw leaking from
all the smaller black electrolytic caps, didn't you? I haven't seen the part 2
but I'll check it out. The capacitor list is great, I was going to go through
the service manual and assemble
had the chance but this saves me the effort. I also used a
NiMh in my T102 and was planning to do the same for this guy.
-- Original Message --
From: "Jeffrey Birt"
To: m...@bitchin100.com
Sent: 3/3/2020 10:15:07 AM
Subject: Re: [M100] LCD Lines
It ‘could’ also be a driver
It ‘could’ also be a driver issue, i.e. the driver for one row is flakey or not
being enabled. You would have to try and match the missing row up to the
matching driver(s) and check for the proper signals. Looking at the schematic
there are several signals marked ‘CS’, i.e. PA0-PA7, PB0-PB1.
I recently had very good luck fixing an LCD.
With careful inspection with a microscope I found corrosion on the traces
that drive the LCD from a particular driver.
The corrosion was right under the rubber conducting gasket. I disassembled
the LCD, removed the gasket, carefully repaired the
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