Re: The continuing story of a Rainbow 100 (Was: Rainbow 100 PSU capacitor list)

[Warner Losh via cctech]

On Tue, Mar 12, 2019 at 1:08 AM Alan Perry  wrote:

>
> As noted in the subject, continuing the story of the Rainbow 100 that I
> rescued last year.
>
> The replacement PSU arrived today and I installed it. It came up to the
> Main System Menu, but I had forgot to plug the RX50 cable into the
> controller board and the RX50 power cable. Though it prompted to press a
> key, it did not respond when a key was pressed.
>
> I powered down and plugged that stuff in. When I powered it back up, the
> display showed a keyboard error and did not display the Main System Menu as
> before. All of the keyboard LEDs lit, then the last one started blicking
> accompanied by a pattern of beeps. I should have checked the LEDs on the
> system unit, but I only did it when the "Main Board interrupt off" message
> was displayed and it corresponded to Message Number 2. If I disconnect the
> keyboard, the system just displays a message about the keyboard.
>
> I was going to take a more systematic approach to diagnosing the issue
> tomorrow. Since the system "just" worked last time I powered it up, I
> wasn't expecting things not to work ...
>
> Any suggestions on what to look at?
>

I'd check the following things:
(1) pull apart all the connections, especially for ones you've done
recently. Use a bright light and look for bent pins. Before pulling apart,
make sure it was seated properly (though often it's impossible).Also make
sure cards are fully seated, diagnostics can fail if they aren't.
(2) Double check all things are connected. The diagnostics are very picky.
(3) Be very careful. This sounds like some issues I've had. I seated the
RX-50 controller card improperly and bent a pin and it caused weird things
to fail. Even a little side to side motion can cause a problem, at least it
did for me.

Warner


> alan
>
> On 3/6/19 10:21 PM, Warner Losh wrote:
>
>
>
> On Wed, Mar 6, 2019 at 9:11 PM Alan Perry  wrote:
>
>>
>>
>> On 3/6/19 5:15 PM, Warner Losh wrote:
>>
>>
>>
>> On Wed, Mar 6, 2019 at 4:36 PM Alan Perry via cctech <
>> cctech@classiccmp.org> wrote:
>>
>>> There was a lot of related discussion to this, but my question was never
>>> answered. Now I seem to have found the answer myself.
>>>
>>> According to a post on VCF Forums, here is the list:
>>>
>>> 2x 3200uF @ 16V
>>> 1x 2200uF @ 35V
>>> 2x 820uF @ 250V
>>> 1x 560uF @ 20V
>>> 1x 330uF @ 20V
>>> 3x 47uF @ 16V
>>> 1x 10uF @ 35V
>>> 1x 2uF @ 25V
>>>
>>> I went ahead and ordered a (claimed) working PSU. Hope it actually works
>>>
>>
>> Cool. Has anybody tried to run an AT or ATX power supply with an adapter
>> for the Rainbow?
>>
>>
>> Do you have pinouts for the connectors on the power supply?
>>
>
>
> The Rainbow 100 Technical Manual (page 3-30) has the following table:
>
> Table 3-11 Power Supply Connector (J8) Signals
> Pin Signal Mnemonic Description
> 1 AC Voltage Okay ACOKH This signal indicates the presence or absence of
> valid ac power entering the power supply. When valid ac power is present,
> this signal will be high. When the ac power is lower than the required
> minimum input voltage, this signal will be low.
> 2 Voltage Bias VBIAS This signal is connected to the communications
> control register via a jumper on the system module. The jumper is installed
> only for manufacturing testing.
> 3 None This pin is missing to provide a key for the cable connector.
> 4 -12 V -12 V input
> 5,6 +12 V + 12 V input
> 7,8,9 +5 V +5 V input
> 10, II, 12, 13 Ground GND DC power return and signal ground
>
> Page 1-10 gives the following regulated values:
>
> +5.1 V ±6% over the current range of 2.5 A to 11.5A
> +12.1 V ±6% over the current range of 0.6 A to 6.7A
> -12 V ± 7% over the current range of 0.0 A to 0.15 A
>
> ~130W power draw max.
>
> Warner
>
> Warner
>>
>>
>>> alan
>>>
>>> On 2/27/19 10:22 AM, Alan Perry via cctech wrote:
>>> >
>>> > Hi,
>>> >
>>> > I think that I need to re-cap the power supply in a Rainbow 100. Does
>>> > anyone here know if anyone has put together a list of capacitors used
>>> > in the power supply that I can use to order parts?
>>> >
>>> > alan
>>> >
>>>
>>>
>>
>

The continuing story of a Rainbow 100 (Was: Rainbow 100 PSU capacitor list)

[Alan Perry via cctech]

As noted in the subject, continuing the story of the Rainbow 100 that I 
rescued last year.


The replacement PSU arrived today and I installed it. It came up to the 
Main System Menu, but I had forgot to plug the RX50 cable into the 
controller board and the RX50 power cable. Though it prompted to press a 
key, it did not respond when a key was pressed.


I powered down and plugged that stuff in. When I powered it back up, the 
display showed a keyboard error and did not display the Main System Menu 
as before. All of the keyboard LEDs lit, then the last one started 
blicking accompanied by a pattern of beeps. I should have checked the 
LEDs on the system unit, but I only did it when the "Main Board 
interrupt off" message was displayed and it corresponded to Message 
Number 2. If I disconnect the keyboard, the system just displays a 
message about the keyboard.


I was going to take a more systematic approach to diagnosing the issue 
tomorrow. Since the system "just" worked last time I powered it up, I 
wasn't expecting things not to work ...


Any suggestions on what to look at?

alan

On 3/6/19 10:21 PM, Warner Losh wrote:



On Wed, Mar 6, 2019 at 9:11 PM Alan Perry > wrote:




On 3/6/19 5:15 PM, Warner Losh wrote:



On Wed, Mar 6, 2019 at 4:36 PM Alan Perry via cctech
mailto:cctech@classiccmp.org>> wrote:

There was a lot of related discussion to this, but my
question was never
answered. Now I seem to have found the answer myself.

According to a post on VCF Forums, here is the list:

2x 3200uF @ 16V
1x 2200uF @ 35V
2x 820uF @ 250V
1x 560uF @ 20V
1x 330uF @ 20V
3x 47uF @ 16V
1x 10uF @ 35V
1x 2uF @ 25V

I went ahead and ordered a (claimed) working PSU. Hope it
actually works


Cool. Has anybody tried to run an AT or ATX power supply with an
adapter for the Rainbow?


Do you have pinouts for the connectors on the power supply?



The Rainbow 100 Technical Manual (page 3-30) has the following table:

Table 3-11 Power Supply Connector (J8) Signals
Pin Signal Mnemonic Description
1 AC Voltage Okay ACOKH This signal indicates the presence or absence 
of valid ac power entering the power supply. When valid ac power is 
present, this signal will be high. When the ac power is lower than the 
required minimum input voltage, this signal will be low.
2 Voltage Bias VBIAS This signal is connected to the communications 
control register via a jumper on the system module. The jumper is 
installed only for manufacturing testing.

3 None This pin is missing to provide a key for the cable connector.
4 -12 V -12 V input
5,6 +12 V + 12 V input
7,8,9 +5 V +5 V input
10, II, 12, 13 Ground GND DC power return and signal ground

Page 1-10 gives the following regulated values:

+5.1 V ±6% over the current range of 2.5 A to 11.5A
+12.1 V ±6% over the current range of 0.6 A to 6.7A
-12 V ± 7% over the current range of 0.0 A to 0.15 A

~130W power draw max.

Warner


Warner

alan

On 2/27/19 10:22 AM, Alan Perry via cctech wrote:
>
> Hi,
>
> I think that I need to re-cap the power supply in a Rainbow
100. Does
> anyone here know if anyone has put together a list of
capacitors used
> in the power supply that I can use to order parts?
>
> alan
>

Re: Rainbow 100 PSU capacitor list

[Warner Losh via cctech]

On Wed, Mar 6, 2019 at 9:11 PM Alan Perry  wrote:

>
>
> On 3/6/19 5:15 PM, Warner Losh wrote:
>
>
>
> On Wed, Mar 6, 2019 at 4:36 PM Alan Perry via cctech <
> cctech@classiccmp.org> wrote:
>
>> There was a lot of related discussion to this, but my question was never
>> answered. Now I seem to have found the answer myself.
>>
>> According to a post on VCF Forums, here is the list:
>>
>> 2x 3200uF @ 16V
>> 1x 2200uF @ 35V
>> 2x 820uF @ 250V
>> 1x 560uF @ 20V
>> 1x 330uF @ 20V
>> 3x 47uF @ 16V
>> 1x 10uF @ 35V
>> 1x 2uF @ 25V
>>
>> I went ahead and ordered a (claimed) working PSU. Hope it actually works
>>
>
> Cool. Has anybody tried to run an AT or ATX power supply with an adapter
> for the Rainbow?
>
>
> Do you have pinouts for the connectors on the power supply?
>


The Rainbow 100 Technical Manual (page 3-30) has the following table:

Table 3-11 Power Supply Connector (J8) Signals
Pin Signal Mnemonic Description
1 AC Voltage Okay ACOKH This signal indicates the presence or absence of
valid ac power entering the power supply. When valid ac power is present,
this signal will be high. When the ac power is lower than the required
minimum input voltage, this signal will be low.
2 Voltage Bias VBIAS This signal is connected to the communications control
register via a jumper on the system module. The jumper is installed only
for manufacturing testing.
3 None This pin is missing to provide a key for the cable connector.
4 -12 V -12 V input
5,6 +12 V + 12 V input
7,8,9 +5 V +5 V input
10, II, 12, 13 Ground GND DC power return and signal ground

Page 1-10 gives the following regulated values:

+5.1 V ±6% over the current range of 2.5 A to 11.5A
+12.1 V ±6% over the current range of 0.6 A to 6.7A
-12 V ± 7% over the current range of 0.0 A to 0.15 A

~130W power draw max.

Warner

Warner
>
>
>> alan
>>
>> On 2/27/19 10:22 AM, Alan Perry via cctech wrote:
>> >
>> > Hi,
>> >
>> > I think that I need to re-cap the power supply in a Rainbow 100. Does
>> > anyone here know if anyone has put together a list of capacitors used
>> > in the power supply that I can use to order parts?
>> >
>> > alan
>> >
>>
>>
>

Re: Rainbow 100 PSU capacitor list

[Warner Losh via cctech]

On Wed, Mar 6, 2019 at 4:36 PM Alan Perry via cctech 
wrote:

> There was a lot of related discussion to this, but my question was never
> answered. Now I seem to have found the answer myself.
>
> According to a post on VCF Forums, here is the list:
>
> 2x 3200uF @ 16V
> 1x 2200uF @ 35V
> 2x 820uF @ 250V
> 1x 560uF @ 20V
> 1x 330uF @ 20V
> 3x 47uF @ 16V
> 1x 10uF @ 35V
> 1x 2uF @ 25V
>
> I went ahead and ordered a (claimed) working PSU. Hope it actually works
>

Cool. Has anybody tried to run an AT or ATX power supply with an adapter
for the Rainbow?

Warner


> alan
>
> On 2/27/19 10:22 AM, Alan Perry via cctech wrote:
> >
> > Hi,
> >
> > I think that I need to re-cap the power supply in a Rainbow 100. Does
> > anyone here know if anyone has put together a list of capacitors used
> > in the power supply that I can use to order parts?
> >
> > alan
> >
>
>

Re: Rainbow 100 PSU capacitor list

[Alan Perry via cctech]

On 3/6/19 5:15 PM, Warner Losh wrote:



On Wed, Mar 6, 2019 at 4:36 PM Alan Perry via cctech 
mailto:cctech@classiccmp.org>> wrote:


There was a lot of related discussion to this, but my question was
never
answered. Now I seem to have found the answer myself.

According to a post on VCF Forums, here is the list:

2x 3200uF @ 16V
1x 2200uF @ 35V
2x 820uF @ 250V
1x 560uF @ 20V
1x 330uF @ 20V
3x 47uF @ 16V
1x 10uF @ 35V
1x 2uF @ 25V

I went ahead and ordered a (claimed) working PSU. Hope it actually
works


Cool. Has anybody tried to run an AT or ATX power supply with an 
adapter for the Rainbow?


Do you have pinouts for the connectors on the power supply?

alan


Warner

alan

On 2/27/19 10:22 AM, Alan Perry via cctech wrote:
>
> Hi,
>
> I think that I need to re-cap the power supply in a Rainbow 100.
Does
> anyone here know if anyone has put together a list of capacitors
used
> in the power supply that I can use to order parts?
>
> alan
>

Re: Rainbow 100 PSU capacitor list

[Alan Perry via cctech]

There was a lot of related discussion to this, but my question was never 
answered. Now I seem to have found the answer myself.


According to a post on VCF Forums, here is the list:

2x 3200uF @ 16V
1x 2200uF @ 35V
2x 820uF @ 250V
1x 560uF @ 20V
1x 330uF @ 20V
3x 47uF @ 16V
1x 10uF @ 35V
1x 2uF @ 25V

I went ahead and ordered a (claimed) working PSU. Hope it actually works.

alan

On 2/27/19 10:22 AM, Alan Perry via cctech wrote:


Hi,

I think that I need to re-cap the power supply in a Rainbow 100. Does 
anyone here know if anyone has put together a list of capacitors used 
in the power supply that I can use to order parts?


alan

Re: Rainbow 100 PSU capacitor list

[Tony Duell via cctech]

On Wed, Mar 6, 2019 at 12:16 AM Alan Perry via cctech
 wrote:
>
> For a little background, I had run the system for about 15 minutes, then
> it sat for a couple months while I removed the PVA from the display,
> then, when I tried to run the system again, the system started to boot
> and then the circuit breaker popped.

This is a switch mode power supply with all the failure modes that that
implies :-)

I'd start by checking the mains bridge rectifier (actually used as a pair
of diodes in a voltage doubler circuit on 110V mains), the mains
smoothing capacitors (820uF?) and the BUV47 chopper transistor. If
the last is short-circut then it's very possible it was damaged by a
fault elsewhere in the PSU.

-tony

Re: Rainbow 100 PSU capacitor list

[Warner Losh via cctech]

If you disconnect the power supply from the motherboard, disks, etc, does
it still pop? If so -> bad power supply. If not, reconnect one at a time
and see if it is load based (eg each of them connected alone causes it). If
it is purely load based, then it's a bad ps). If there's one thing that
causes it to pop, there's an issue there. If it is the mobo, you might also
try w/o the VR201 connected, since if that's pulling too much power, it can
cause a PS overload (though I've never had this issue, I've read about it
years ago).

Warner

On Tue, Mar 5, 2019 at 2:56 PM Alan Perry  wrote:

> OK, got back to this ...
>
> Plugged in the Rainbow 100. Flipped the power switch. No LEDs lit.
>
> There is a white circuit breaker on the power supply. When I switch on the
> power, it pops out. I switch off the power, reset the breaker, switch on
> the power and it pops out again.
>
> alan
>
> On 3/1/19 2:32 PM, Warner Losh wrote:
>
> Since you don't hear the gears grinding in the rx-50, that's a failure
> fairly early on. The LEDs in the back of the case will tell you something.
> There's a table for LED codes in the Rainbow manuals somewhere. If NO LEDs
> are on, that tells you something too (they all light up on application of
> power).
>
> I've had my rainbow for 30 years, and haven't had to deal with bad caps in
> the power supply, but I've also gone as long as a decade with the Rainbow
> in a box...  And now I have 4 of them (2As and 2Bs)
>
> Warner
>
> On Fri, Mar 1, 2019 at 3:13 PM Alan Perry  wrote:
>
>> I will look at that when I get back home after the weekend.
>>
>> On Mar 1, 2019, at 2:01 PM, Warner Losh  wrote:
>>
>>
>>
>> On Fri, Mar 1, 2019 at 2:56 PM Alan Perry via cctech <
>> cctech@classiccmp.org> wrote:
>>
>>> Initially it booted and ran for a while until I switched it off.
>>>
>>> The last time it responded to the power switched, components powered up
>>> and the FDD started operating. Then suddenly everything stopped like the
>>> plug had been pulled.
>>>
>>> Now it does nothing (apparent) when it is switched on.
>>>
>>
>> The rainbow has a number of LEDs in the back that it frobs while
>> booting... Do any of them light up?
>>
>> Warner
>>
>>
>>> alan
>>>
>>> > On Mar 1, 2019, at 1:44 PM, dwight  wrote:
>>> >
>>> > Maybe I need a little clearification.
>>> > When you turn the switches off, it boots?
>>> > Dwight
>>> >
>>> >
>>> > From: cctech  on behalf of Alan Perry
>>> via cctech 
>>> > Sent: Friday, March 1, 2019 1:35 PM
>>> > To: Ethan Dicks
>>> > Cc: General Discussion: On-Topic Posts
>>> > Subject: Re: Rainbow 100 PSU capacitor list
>>> >
>>> >
>>> >
>>> > > On Mar 1, 2019, at 7:52 AM, Ethan Dicks 
>>> wrote:
>>> > >
>>> > > On Wed, Feb 27, 2019 at 1:21 PM Alan Perry via cctech
>>> > >  wrote:
>>> > >> Hi,
>>> > >>
>>> > >> I think that I need to re-cap the power supply in a Rainbow 100.
>>> Does
>>> > >> anyone here know if anyone has put together a list of capacitors
>>> used in
>>> > >> the power supply that I can use to order parts?
>>> > >
>>> > > I don't have a list (I just got a pair of Rainbows last month) but
>>> > > given the era of manufacture, I'd be looking for Rifa EMI filter caps
>>> > > by the power inlet.  I've had those fail in BA23 cabinets and in a
>>> > > Commodore D9060 hard drive, and a TRS-80 Model 4.
>>> >
>>> > Thanks. When I first got the Rainbow, I asked here about what to look
>>> for before powering it up and was told about Rifa caps and what look/listen
>>> for.
>>> >
>>> > I eventually threw caution to the wind and just powered it up and I
>>> ran it for 15-20 minutes. The PVA in the monitor was really cloudy, so I
>>> didn’t use the system anymore until I removed the PVA over Christmas. I was
>>> testing everything after that and the system was booting up when the power
>>> all switched off like it had been unplugged.
>>> >
>>> > alan
>>> >
>>> >
>>> > >
>>> > > This is totally different than failing/bulging electrolytics.
>>> > >
>>> > > -ethan
>>> >
>>>
>>
>

Re: Rainbow 100 PSU capacitor list

[Alan Perry via cctech]

For a little background, I had run the system for about 15 minutes, then 
it sat for a couple months while I removed the PVA from the display, 
then, when I tried to run the system again, the system started to boot 
and then the circuit breaker popped.


On 3/5/19 4:02 PM, Fred Cisin via cctech wrote:
The circuit breaker is there to reduce the chances that a problem 
turns into a disaster.


Although it IS possible to have a defective circuit breaker that is 
"false tripping", or thinking that it has an overload at normal 
amperages, that is unlikely.


I'm afraid that it is time to start by checking for shorts to ground, 
etc., without continuing to let it happen.  Starting with whatever the 
circuit breaker is trying to protect.




On Tue, 5 Mar 2019, Alan Perry via cctech wrote:


Yes, with the power supply disconnected from the mobo, it pops.

alan

On 3/5/19 3:43 PM, Warner Losh wrote:
If you disconnect the power supply from the motherboard, disks, etc, 
does it still pop? If so -> bad power supply. If not, reconnect one 
at a time and see if it is load based (eg each of them connected 
alone causes it). If it is purely load based, then it's a bad ps). 
If there's one thing that causes it to pop, there's an issue there. 
If it is the mobo, you might also try w/o the VR201 connected, since 
if that's pulling too much power, it can cause a PS overload (though 
I've never had this issue, I've read about it years ago).


Warner

On Tue, Mar 5, 2019 at 2:56 PM Alan Perry > wrote:


    OK, got back to this ...

    Plugged in the Rainbow 100. Flipped the power switch. No LEDs lit.

    There is a white circuit breaker on the power supply. When I
    switch on the power, it pops out. I switch off the power, reset
    the breaker, switch on the power and it pops out again.

    alan

Re: Rainbow 100 PSU capacitor list

[Fred Cisin via cctech]

The circuit breaker is there to reduce the chances that a problem turns 
into a disaster.


Although it IS possible to have a defective circuit breaker that is "false 
tripping", or thinking that it has an overload at normal amperages, that 
is unlikely.


I'm afraid that it is time to start by checking for shorts to ground, 
etc., without continuing to let it happen.  Starting with whatever the 
circuit breaker is trying to protect.




On Tue, 5 Mar 2019, Alan Perry via cctech wrote:


Yes, with the power supply disconnected from the mobo, it pops.

alan

On 3/5/19 3:43 PM, Warner Losh wrote:
If you disconnect the power supply from the motherboard, disks, etc, does 
it still pop? If so -> bad power supply. If not, reconnect one at a time 
and see if it is load based (eg each of them connected alone causes it). 
If it is purely load based, then it's a bad ps). If there's one thing that 
causes it to pop, there's an issue there. If it is the mobo, you might 
also try w/o the VR201 connected, since if that's pulling too much power, 
it can cause a PS overload (though I've never had this issue, I've read 
about it years ago).


Warner

On Tue, Mar 5, 2019 at 2:56 PM Alan Perry > wrote:


OK, got back to this ...

Plugged in the Rainbow 100. Flipped the power switch. No LEDs lit.

There is a white circuit breaker on the power supply. When I
switch on the power, it pops out. I switch off the power, reset
the breaker, switch on the power and it pops out again.

alan

Re: Rainbow 100 PSU capacitor list

[Alan Perry via cctech]

Yes, with the power supply disconnected from the mobo, it pops.

alan

On 3/5/19 3:43 PM, Warner Losh wrote:
If you disconnect the power supply from the motherboard, disks, etc, 
does it still pop? If so -> bad power supply. If not, reconnect one at 
a time and see if it is load based (eg each of them connected alone 
causes it). If it is purely load based, then it's a bad ps). If 
there's one thing that causes it to pop, there's an issue there. If it 
is the mobo, you might also try w/o the VR201 connected, since if 
that's pulling too much power, it can cause a PS overload (though I've 
never had this issue, I've read about it years ago).


Warner

On Tue, Mar 5, 2019 at 2:56 PM Alan Perry <mailto:ape...@snowmoose.com>> wrote:


OK, got back to this ...

Plugged in the Rainbow 100. Flipped the power switch. No LEDs lit.

There is a white circuit breaker on the power supply. When I
switch on the power, it pops out. I switch off the power, reset
the breaker, switch on the power and it pops out again.

alan

On 3/1/19 2:32 PM, Warner Losh wrote:

Since you don't hear the gears grinding in the rx-50, that's a
failure fairly early on. The LEDs in the back of the case will
tell you something. There's a table for LED codes in the Rainbow
manuals somewhere. If NO LEDs are on, that tells you something
too (they all light up on application of power).

I've had my rainbow for 30 years, and haven't had to deal with
bad caps in the power supply, but I've also gone as long as a
decade with the Rainbow in a box...  And now I have 4 of them
(2As and 2Bs)

Warner

On Fri, Mar 1, 2019 at 3:13 PM Alan Perry mailto:ape...@snowmoose.com>> wrote:

I will look at that when I get back home after the weekend.

On Mar 1, 2019, at 2:01 PM, Warner Losh mailto:i...@bsdimp.com>> wrote:




On Fri, Mar 1, 2019 at 2:56 PM Alan Perry via cctech
mailto:cctech@classiccmp.org>> wrote:

Initially it booted and ran for a while until I switched
it off.

The last time it responded to the power switched,
components powered up and the FDD started operating.
Then suddenly everything stopped like the plug had been
pulled.

Now it does nothing (apparent) when it is switched on.


The rainbow has a number of LEDs in the back that it frobs
while booting... Do any of them light up?

Warner

alan

> On Mar 1, 2019, at 1:44 PM, dwight
mailto:dkel...@hotmail.com>> wrote:
>
> Maybe I need a little clearification.
> When you turn the switches off, it boots?
> Dwight
>
>
> From: cctech mailto:cctech-boun...@classiccmp.org>> on behalf of
Alan Perry via cctech mailto:cctech@classiccmp.org>>
> Sent: Friday, March 1, 2019 1:35 PM
> To: Ethan Dicks
        > Cc: General Discussion: On-Topic Posts
> Subject: Re: Rainbow 100 PSU capacitor list
>
>
>
> > On Mar 1, 2019, at 7:52 AM, Ethan Dicks
mailto:ethan.di...@gmail.com>>
wrote:
> >
> > On Wed, Feb 27, 2019 at 1:21 PM Alan Perry via cctech
> > mailto:cctech@classiccmp.org>> wrote:
> >> Hi,
> >>
> >> I think that I need to re-cap the power supply in a
Rainbow 100. Does
> >> anyone here know if anyone has put together a list
of capacitors used in
> >> the power supply that I can use to order parts?
> >
> > I don't have a list (I just got a pair of Rainbows
last month) but
> > given the era of manufacture, I'd be looking for
Rifa EMI filter caps
> > by the power inlet.  I've had those fail in BA23
cabinets and in a
> > Commodore D9060 hard drive, and a TRS-80 Model 4.
>
> Thanks. When I first got the Rainbow, I asked here
about what to look for before powering it up and was
told about Rifa caps and what look/listen for.
>
> I eventually threw caution to the wind and just
powered it up and I ran it for 15-20 minutes. The PVA in
the monitor was really cloudy, so I didn’t use the
system anymore until I removed the PVA over Christmas. I
was testing everything after that and the system was
booting up when the power all switched off like it had
been unplugged.
>
> alan
>
>
> >
> > This is totally different than failing/bulging
electrolytics.
> >
> > -ethan
>

Re: Rainbow 100 PSU capacitor list

[Alan Perry via cctech]

OK, got back to this ...

Plugged in the Rainbow 100. Flipped the power switch. No LEDs lit.

There is a white circuit breaker on the power supply. When I switch on 
the power, it pops out. I switch off the power, reset the breaker, 
switch on the power and it pops out again.


alan

On 3/1/19 2:32 PM, Warner Losh wrote:
Since you don't hear the gears grinding in the rx-50, that's a failure 
fairly early on. The LEDs in the back of the case will tell you 
something. There's a table for LED codes in the Rainbow manuals 
somewhere. If NO LEDs are on, that tells you something too (they all 
light up on application of power).


I've had my rainbow for 30 years, and haven't had to deal with bad 
caps in the power supply, but I've also gone as long as a decade with 
the Rainbow in a box...  And now I have 4 of them (2As and 2Bs)


Warner

On Fri, Mar 1, 2019 at 3:13 PM Alan Perry <mailto:ape...@snowmoose.com>> wrote:


I will look at that when I get back home after the weekend.

On Mar 1, 2019, at 2:01 PM, Warner Losh mailto:i...@bsdimp.com>> wrote:




On Fri, Mar 1, 2019 at 2:56 PM Alan Perry via cctech
mailto:cctech@classiccmp.org>> wrote:

Initially it booted and ran for a while until I switched it off.

The last time it responded to the power switched, components
powered up and the FDD started operating. Then suddenly
everything stopped like the plug had been pulled.

Now it does nothing (apparent) when it is switched on.


The rainbow has a number of LEDs in the back that it frobs while
booting... Do any of them light up?

Warner

alan

> On Mar 1, 2019, at 1:44 PM, dwight mailto:dkel...@hotmail.com>> wrote:
>
> Maybe I need a little clearification.
> When you turn the switches off, it boots?
> Dwight
>
>
> From: cctech mailto:cctech-boun...@classiccmp.org>> on behalf of Alan
Perry via cctech mailto:cctech@classiccmp.org>>
> Sent: Friday, March 1, 2019 1:35 PM
> To: Ethan Dicks
    > Cc: General Discussion: On-Topic Posts
> Subject: Re: Rainbow 100 PSU capacitor list
>
>
>
> > On Mar 1, 2019, at 7:52 AM, Ethan Dicks
mailto:ethan.di...@gmail.com>> wrote:
> >
> > On Wed, Feb 27, 2019 at 1:21 PM Alan Perry via cctech
> > mailto:cctech@classiccmp.org>> wrote:
> >> Hi,
> >>
> >> I think that I need to re-cap the power supply in a
Rainbow 100. Does
> >> anyone here know if anyone has put together a list of
capacitors used in
> >> the power supply that I can use to order parts?
> >
> > I don't have a list (I just got a pair of Rainbows last
month) but
> > given the era of manufacture, I'd be looking for Rifa EMI
filter caps
> > by the power inlet.  I've had those fail in BA23 cabinets
and in a
> > Commodore D9060 hard drive, and a TRS-80 Model 4.
>
> Thanks. When I first got the Rainbow, I asked here about
what to look for before powering it up and was told about
Rifa caps and what look/listen for.
>
> I eventually threw caution to the wind and just powered it
up and I ran it for 15-20 minutes. The PVA in the monitor was
really cloudy, so I didn’t use the system anymore until I
removed the PVA over Christmas. I was testing everything
after that and the system was booting up when the power all
switched off like it had been unplugged.
>
> alan
>
>
> >
> > This is totally different than failing/bulging electrolytics.
> >
> > -ethan
>

Re: Rainbow 100 PSU capacitor list

[dwight via cctech]

Maybe I need a little clearification.
When you turn the switches off, it boots?
Dwight


From: cctech  on behalf of Alan Perry via cctech 

Sent: Friday, March 1, 2019 1:35 PM
To: Ethan Dicks
Cc: General Discussion: On-Topic Posts
Subject: Re: Rainbow 100 PSU capacitor list



> On Mar 1, 2019, at 7:52 AM, Ethan Dicks  wrote:
>
> On Wed, Feb 27, 2019 at 1:21 PM Alan Perry via cctech
>  wrote:
>> Hi,
>>
>> I think that I need to re-cap the power supply in a Rainbow 100. Does
>> anyone here know if anyone has put together a list of capacitors used in
>> the power supply that I can use to order parts?
>
> I don't have a list (I just got a pair of Rainbows last month) but
> given the era of manufacture, I'd be looking for Rifa EMI filter caps
> by the power inlet.  I've had those fail in BA23 cabinets and in a
> Commodore D9060 hard drive, and a TRS-80 Model 4.

Thanks. When I first got the Rainbow, I asked here about what to look for 
before powering it up and was told about Rifa caps and what look/listen for.

I eventually threw caution to the wind and just powered it up and I ran it for 
15-20 minutes. The PVA in the monitor was really cloudy, so I didn’t use the 
system anymore until I removed the PVA over Christmas. I was testing everything 
after that and the system was booting up when the power all switched off like 
it had been unplugged.

alan


>
> This is totally different than failing/bulging electrolytics.
>
> -ethan

Re: Rainbow 100 PSU capacitor list

[Warner Losh via cctech]

Since you don't hear the gears grinding in the rx-50, that's a failure
fairly early on. The LEDs in the back of the case will tell you something.
There's a table for LED codes in the Rainbow manuals somewhere. If NO LEDs
are on, that tells you something too (they all light up on application of
power).

I've had my rainbow for 30 years, and haven't had to deal with bad caps in
the power supply, but I've also gone as long as a decade with the Rainbow
in a box...  And now I have 4 of them (2As and 2Bs)

Warner

On Fri, Mar 1, 2019 at 3:13 PM Alan Perry  wrote:

> I will look at that when I get back home after the weekend.
>
> On Mar 1, 2019, at 2:01 PM, Warner Losh  wrote:
>
>
>
> On Fri, Mar 1, 2019 at 2:56 PM Alan Perry via cctech <
> cctech@classiccmp.org> wrote:
>
>> Initially it booted and ran for a while until I switched it off.
>>
>> The last time it responded to the power switched, components powered up
>> and the FDD started operating. Then suddenly everything stopped like the
>> plug had been pulled.
>>
>> Now it does nothing (apparent) when it is switched on.
>>
>
> The rainbow has a number of LEDs in the back that it frobs while
> booting... Do any of them light up?
>
> Warner
>
>
>> alan
>>
>> > On Mar 1, 2019, at 1:44 PM, dwight  wrote:
>> >
>> > Maybe I need a little clearification.
>> > When you turn the switches off, it boots?
>> > Dwight
>> >
>> >
>> > From: cctech  on behalf of Alan Perry
>> via cctech 
>> > Sent: Friday, March 1, 2019 1:35 PM
>> > To: Ethan Dicks
>> > Cc: General Discussion: On-Topic Posts
>> > Subject: Re: Rainbow 100 PSU capacitor list
>> >
>> >
>> >
>> > > On Mar 1, 2019, at 7:52 AM, Ethan Dicks 
>> wrote:
>> > >
>> > > On Wed, Feb 27, 2019 at 1:21 PM Alan Perry via cctech
>> > >  wrote:
>> > >> Hi,
>> > >>
>> > >> I think that I need to re-cap the power supply in a Rainbow 100. Does
>> > >> anyone here know if anyone has put together a list of capacitors
>> used in
>> > >> the power supply that I can use to order parts?
>> > >
>> > > I don't have a list (I just got a pair of Rainbows last month) but
>> > > given the era of manufacture, I'd be looking for Rifa EMI filter caps
>> > > by the power inlet.  I've had those fail in BA23 cabinets and in a
>> > > Commodore D9060 hard drive, and a TRS-80 Model 4.
>> >
>> > Thanks. When I first got the Rainbow, I asked here about what to look
>> for before powering it up and was told about Rifa caps and what look/listen
>> for.
>> >
>> > I eventually threw caution to the wind and just powered it up and I ran
>> it for 15-20 minutes. The PVA in the monitor was really cloudy, so I didn’t
>> use the system anymore until I removed the PVA over Christmas. I was
>> testing everything after that and the system was booting up when the power
>> all switched off like it had been unplugged.
>> >
>> > alan
>> >
>> >
>> > >
>> > > This is totally different than failing/bulging electrolytics.
>> > >
>> > > -ethan
>> >
>>
>

Re: Rainbow 100 PSU capacitor list

[Alan Perry via cctech]

> On Mar 1, 2019, at 7:52 AM, Ethan Dicks  wrote:
> 
> On Wed, Feb 27, 2019 at 1:21 PM Alan Perry via cctech
>  wrote:
>> Hi,
>> 
>> I think that I need to re-cap the power supply in a Rainbow 100. Does
>> anyone here know if anyone has put together a list of capacitors used in
>> the power supply that I can use to order parts?
> 
> I don't have a list (I just got a pair of Rainbows last month) but
> given the era of manufacture, I'd be looking for Rifa EMI filter caps
> by the power inlet.  I've had those fail in BA23 cabinets and in a
> Commodore D9060 hard drive, and a TRS-80 Model 4.

Thanks. When I first got the Rainbow, I asked here about what to look for 
before powering it up and was told about Rifa caps and what look/listen for.

I eventually threw caution to the wind and just powered it up and I ran it for 
15-20 minutes. The PVA in the monitor was really cloudy, so I didn’t use the 
system anymore until I removed the PVA over Christmas. I was testing everything 
after that and the system was booting up when the power all switched off like 
it had been unplugged.

alan 


> 
> This is totally different than failing/bulging electrolytics.
> 
> -ethan

Re: Rainbow 100 PSU capacitor list

[Ethan Dicks via cctech]

On Wed, Feb 27, 2019 at 1:21 PM Alan Perry via cctech
 wrote:
> Hi,
>
> I think that I need to re-cap the power supply in a Rainbow 100. Does
> anyone here know if anyone has put together a list of capacitors used in
> the power supply that I can use to order parts?

I don't have a list (I just got a pair of Rainbows last month) but
given the era of manufacture, I'd be looking for Rifa EMI filter caps
by the power inlet.  I've had those fail in BA23 cabinets and in a
Commodore D9060 hard drive, and a TRS-80 Model 4.

This is totally different than failing/bulging electrolytics.

-ethan

Rainbow 100 PSU capacitor list

[Alan Perry via cctech]

Hi,

I think that I need to re-cap the power supply in a Rainbow 100. Does 
anyone here know if anyone has put together a list of capacitors used in 
the power supply that I can use to order parts?


alan