Monitor problem

thats vertical deflection failure. what chassis is in that unit? pics plz

i'd start by reflowing any cold solder joints on the vertical deflection IC chip and in that section too.
could be thats all it is.
could be that IC chip failed. could get a little more complicated too, depending on what exactly failed.

kinda looks like the game is still playing right? you can hear it playing ? that means the game board is ok and its just a monitor problem.
 
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It's a U5000. Start with a cap kit, and inspect it for cold solder joints while doing so...
 
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