Re: AppleColor RGB Monitor --- Problem

[quadrajet1@aol.com (Quadrajet1)]

<< "Jeff Thomas" <a2forever@usa.net> wrote in message
3F668CD9.29C7B121@usa.net">news:3F668CD9.29C7B121@usa.net...
> I have "AppleColor RGB Monitor", Model no. A2M6014X and manufactured in
> December 1987, connected to my Apple IIGS. When the monitor is first
> turned on, it operates properly, and as it heats up, so does the
> brightness until everything becomes blurry and unreadable. I tried
> adjusting contrast and brightness dials with no improvement. I heard
> that this is common problem with this particular monitor. Does anyone
> know how to fix it and what is wrong?
>
> Any help is greatly appreciated as these monitors are hard to find in
> New Zealand.

I have exactly the same problem with my AppleColor RGB Monitor, Model no.
A2M6014 (no X) manufactured August 1987.  I too heard that this is a common
problem but the only thing else that I heard was that it was caused by bad
(old) capacitors.  Unfortunately, I don't know which ones.  I have inspected
mine (mainly the electrolytics) and don't see anything physically wrong.  Other
than replace every one, I don't know what to do.

Charlie  >>

  If you don't mind working inside your monitor while it's on you should be
able to find the problem fairly simply.  Find a can of "Freeze Spray" at you
local electronics dealer. I am sure radio Shack has it, but it'll cost you
more.  When the monitor warms up and starts to brighten up, hit a small shot of
spray (with the supplied ube of course) at each capacitor, until the problem
goes away.  Do the warm up / cool down cycle a few times to be sure you found
the right part.  You can also speed things up by warming the monitor PCB by
using a hair dryer on High Heat. You may want to hit some of the other
components just in case the caps are good.  About the only place you don't want
to spray is the neck of the tube where the filament heater is.

Raymond