Re: TECH: Monitor image issue - can you identify?



Hi. Thanks for the pointers so far.
Indeed, I had noticed that there was a glob of glue around the flyback
brightness pot that looks like it got loose. Perhaps it moved by mistake
while Cap Kit was applied. It is for a friend's machine so I will have him
check soon.
The monitor is a:
Wells Gardner
Model No. 25K7193

I will post more observations soon. Thanks.

"Pat Danis" <patdanis@xxxxxxxxxxx> wrote in message
news:6guif.2858$tg3.578@xxxxxxxxxxx
> Yes, turn down the brightness on the flyback. Those thin lines are
> retrace lines. The fact you have so much green indicates you may have a
> bad green transistor.
>
> Did the monitor have the correct colors before you did the cap kit?
> Without knowing which monitor you are talking about, it is tough to
> diagnose the issue. Try adjusting the red and blue guns and see what
> happens. Make small incremental changes. I usually center the controls
> after each cap kit and adjust it from there. I use my "highly trained"
> eye to determine what is a good image as opposed to setting each color
> individually. YMMV
>
> Have you tried another monitor to make sure the board set is producing all
> of the correct colors?
>
> Get back to us with the model of the monitor/chassis and maybe we can help
> more.
>
> Pat D.
>
> [80s.fan] wrote:
>> Hi. My friend has a 25" monitor (not sure on Model) in a Street Fighter
>> machine.
>>
>> After we did a cap kit, we noticed that that the screen is mainly green
>> as seen in this picture:
>> http://pages.infinit.net/jpi/green_bars.jpg
>>
>> Since I did about 30 cap kits before, I doubt that anything went wrong
>> with the capacitors. They are not shorted (I checked), didn't pop
>> (polarity put in ok), etc.
>>
>> Moving the Green cutoff/bias/drive pots (x2) on the Neck PCB does affect
>> the image but doesn't get rid of all this green and the lines across.
>>
>> Could it be the brightness on the flyback?
>>
>> What could it be?
>>
>> Thanks.
>>


.



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