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Re: IIgs RGB monitor repair question.
- Subject: Re: IIgs RGB monitor repair question.
- From: Rubywand <rubywand@swbell.net>
- Date: Wed, 05 Jun 2002 07:38:11 GMT
- Newsgroups: comp.sys.apple2
- Organization: Prodigy Internet http://www.prodigy.com
- References: <R2hK8.39503$0A2.31767@rwcrnsc54>
- Xref: archiver1.google.com comp.sys.apple2:20101
Rob writes ...
>
> Anyone know what would cause a IIgs RGB monitor to slowly increase in
> brightness\contrast? What components may be bad?
> When it's first turned on the display looks normal but as it warms up the
> brightness and contrast slowly increase to the point where it's too bright.
> I even have the brightness and contrast dialed all the way down.
>
....
Have run into the same problem. As Mark indicates, you may be able to
get a good display by adjusting Focus and Intensity on the HV module ...
http://home.swbell.net/rubywand/Csa2MONITOR.html#011 .
This will usually let you move the adjustment range for your external
controls so that getting a good picture is possible.
What seems to be a long-term fix involves replacing filter
capacitors. It is discussed by Eric Jacobs at ...
http://home.swbell.net/rubywand/Csa2MONITOR.html#034 .
Some safety precautions are discussed at ...
http://home.swbell.net/rubywand/Csa2MONITOR.html#003
http://home.swbell.net/rubywand/Csa2MONITOR.html#004 .
Rubywand