4900 brightness

cleverlyj

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Donor 2011
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so, i'm still having this issue. at first i thought it was a color issue but it's not. anyways, in the 4900 in my tron, it's most noticable when i'm on the light cycle stage, but there's a flickering where the brightness flickers bright and dim back and forth.

i've touched up solder joints on the chassis and neckboard.

it didn't do this before it was capped.

anyways, i understand that i very well could have created this problem, but can anyone point me to the circuit / area on the chassis or caps in particular i should be looking at for this issue?

oh, forgot to add. when the game is first turned on the black in the game is all even, and there is no border on the screen, but after a few minutes you can see a slight border as if you turned the brightness up a hair. don't know if this has anything to do with it.
 
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