tech: sharp image 25" monitor prob

monster kong

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culprit- 25 inch medium res sharper image monitor.

this monitor is in a stock california speed sit down.

it will work for a while, then the screen goes out completely.
i recapped the entire monitor, and it still does the same thing.
all solder joints were reflowed as well.

the problem is the monitor for sure and not the games cabinet as it was tried in another identical machine and does the same thing.
it will work for an hour or 2, then just go blank.

thoughts?
 
Will it power back up right away, or do you have to leave it off for a while?
 
monitor

First i would check if you have heater voltage on the neck board when it goes out next time. If you do then i would tap on the chassis with a plastic whatever and see if you don't have a cold solder joint that opens up after it heats up. Did you check or replace the caps in the power section?
 
ALL caps were replaced on the entire chassis and neckboard. all solder joints were gone over. there are no cold solder joints for sure. its something else not as simple im guessing, i wish it were an easy one....
 
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