Need help on my Hypersports PCB repair!!

gprotein

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Anyone here can help me to repair my Hypersports PCB? It shows garbage on screen when started up.
 
That's a tough one.

I have 2 of them here kicking me in the tail at the moment. One is the victim of a failed power supply and has needed MANY TTL chips replaced.

The other has 2 bad custom ICs on the video board.
 
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