1942 game with flickering screen

marian

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Hi

I am trying to get to the bottom of an 1942 game to fix its small flickering screen.
Otherwise it works normal. Initially the video is very shaky with few vertical wide cross bars, but after few minutes the flickering is much less.

Please let me know if you have any suggestions.
 
Its just the video on the PCB. No monitor issues. I am using it with a very good LCD.

It has to do with some IC on the board itself. Or even a cap there on the board, but i've checked all the ceramic ones are they all are fine. There are 2 mica capacitors that i couldn't check 47pf, but they also look good in circuit. The others are specific to the audio section.

Everything i've checked looks good on the board.
 
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