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From: johnj@hijg.prl.philips.nl (John Janssen)
Newsgroups: comp.sys.atari.st.tech
Subject: Re: Mono monitor problems
Keywords: mono ,SM124
Message-ID: <2588@prles2.prl.philips.nl>
Date: 13 Mar 91 14:03:36 GMT
References: <101430@unix.cis.pitt.edu>
Sender: news@prles2.prl.philips.nl
Reply-To: johnj@hijg.UUCP (John Janssen)
Organization: Philips Research Laboratories, the Netherlands
Lines: 51

In article <101430@unix.cis.pitt.edu> dgjst@unix.cis.pitt.edu (Daniel G. Jones) writes:
>
>	Hello, my mono mon. went bad a little while ago, and if 
>	anyone recognizes the problem and knows a fix I'd appreciate
>	hearing from them.
>
>SYMPTOMS: the image shifted to the left hand side of the screen
>	  very bright line through the center of what image is left
>	  image is the wrong term--VERY distorted view of the 
>		desktop with parts of a few icons visible.
>
>	This problem occured suddenly, with no prior symptoms. It has
>	been in daily use for over a year.
>
>	If this sounds familiar, how do you fix it or
>		how much did you pay to have it fixed.
> 
>				Thanks in advance,
>					Dan Jones
>					sleepy@unix.cis.pitt.edu
>					dgjst@unix.cis.pitt.edu


I had a simular problem some years ago.
I remember that the monitor sometimes worked fine for
a few days, and then had that problem for a few days, etc.
Sometimes it came up, while switching on, but sometimes
halfway without doing anything particular. Anyway very strange.

I fixed it (together with a friend). 
I still have the same gear now and it never happened since.

So here's what to do:

Check the PCB within monitor for broken 'routes'.
(Sorry I do not know what better word to use, I am not English).
You know the fix 'wires' on the PCB of copper (Cu).

I found two routes on the PCB broken. However it was very hard
to see. Use some kind of magnifier and good light.
And while you're busy, resolder all solder points, as many
were badly soldered (at least in my SM124).

I remember that one broken 'route' was so close to a solder point
that we hardly saw it.

Good luck.

--
John Janssen     johnj@idms.prl.philips.nl
Venlo Holland