Andrew | 10 Jul 2012 18:17
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Re: CM-8 Service Manual

> Message: 7
> Date: Mon, 09 Jul 2012 15:16:58 -0400
> From: "tonym" <tonym@...>
> Subject: Re: [Coco] CM-8 Service Manual
> To: coco@...
> Message-ID: <201207091516356.SM1136011 <at> MAIL>
> Content-Type: text/plain; charset=us-ascii
>
> Haven't had luck finding someone who will look at it.
> The guy I used to use closed up, and moved to Texas.
>
> Maybe a description might ring someone's bell as to what it is?
> I can see the screen, but it's trapezoidal - narrower on top, about 2" of black border on both sides on
bottom, about 3" on both sides up top.
> Screen is legible, just wierdly shaped, and packed to the middle. Kinda reminds you of the old 80's driving
video games, trying to do a perspective view of
> a road going into the distance.
>
> Roy is backed up with the VGA converters, and I can't get anyone to fix it, and the 80col screens aren't
really legible, especially as my eyes aren't as good
> as they were 25Y ago :) So, I got this nice, shiny, new SuperIDE and a Sardis FDC and a repaired J&M FDC... and I
can't use it.
>
> Ideas on what the issue might be?
>
> I have a referral, but they guy says he doesn't do monitors, because it's impossible to get parts.
> However, cracking this thing open last night, it's mostly discrete components, not a bunch of
proprietary parts.
> Wonder if I shouldn't just swing by with it to see if he'll take a crack at it if it's not proprietary stuff?

(Continue reading)

tonym | 10 Jul 2012 18:31
Favicon

Re: CM-8 Service Manual

The cord, the monitor is probably just sitting on it. Both come out the back.

As to Roy's box, already on the list: I think he had pity on me, so hurried a bit with mine :)

I bought all this neat, cool stuff from Mark: SuperIDE, Sardis FDC, repaired J&M FDC, and the CM-8 went out.
NitrOS-9 in 80 columns is not really legible out of the video-out connector, so I'm basically stuck.

Well, until I get Roy's VGA converter - then I should be good to go again except...

Anyone got an MPI for sale for NOT a King's Ransom? Mine is on it's last legs, and I'll need one to 
test the floppies I got from Art so I can make .DSKs out of them.

Tony

---- Original Message ----
From: "Andrew" <keeper63@...>
Sent: 7/10/2012 12:17:46 PM
To: coco@...
Subject: Re: [Coco] CM-8 Service Manual

> Message: 7
> Date: Mon, 09 Jul 2012 15:16:58 -0400
> From: "tonym" <tonym@...>
> Subject: Re: [Coco] CM-8 Service Manual
> To: coco@...
> Message-ID: <201207091516356.SM1136011 <at> MAIL>
> Content-Type: text/plain; charset=us-ascii
>
> Haven't had luck finding someone who will look at it.
> The guy I used to use closed up, and moved to Texas.
(Continue reading)

Louis Ciotti | 10 Jul 2012 19:00
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Re: CM-8 Service Manual

>
>
> As to Roy's box, already on the list: I think he had pity on me, so
> hurried a bit with mine :)
>
>
Roy's box seems like a nice thing to have...   I wish I had some free time
I would offer to help if build up some of them, but I have noticed I have
too many irons in the fire as it is.

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Sean | 10 Jul 2012 18:43
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Re: CM-8 Service Manual

>
> ...and I must be getting old: I could've sworn my CoCo 3 always read "SUPER
> EXTENDED COLOR BASIC 2.0" without the floppy drive connected (but I don't
> mine set up right now to check); I just re-ran VCC and ejected the MPI, and
> it comes up "EXTENDED COLOR BASIC 2.0", so that must be right unless I'm
> going crazy, senile, or both...hmm.

Must be senile, pretty sure it's always just been "Extended Color Basic 2.0"

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camillus Blockx | 10 Jul 2012 22:25
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Re: CM-8 Service Manual

You may want to ask in sci.electronics.repair because there are a lot
of TV/monitor technicians there. I think I've read there that a
problem like this is in the horizontal deflection circuitry, possibly
the damper diode, which may be a separate device or built into the
horizontal output transistor.

On Tue, Jul 10, 2012 at 11:17 AM, Andrew <keeper63@...> wrote:

> Message: 7
>> Date: Mon, 09 Jul 2012 15:16:58 -0400
>> From: "tonym" <tonym@...>
>> Subject: Re: [Coco] CM-8 Service Manual
>> To: coco@...
>> Message-ID: <201207091516356.SM1136011 <at> **MAIL>
>> Content-Type: text/plain; charset=us-ascii
>>
>> Haven't had luck finding someone who will look at it.
>> The guy I used to use closed up, and moved to Texas.
>>
>> Maybe a description might ring someone's bell as to what it is?
>> I can see the screen, but it's trapezoidal - narrower on top, about 2" of
>> black border on both sides on bottom, about 3" on both sides up top.
>> Screen is legible, just wierdly shaped, and packed to the middle. Kinda
>> reminds you of the old 80's driving video games, trying to do a perspective
>> view of
>> a road going into the distance.
>>
>> Roy is backed up with the VGA converters, and I can't get anyone to fix
>> it, and the 80col screens aren't really legible, especially as my eyes
>> aren't as good
(Continue reading)


Gmane