Tempest repair problems

Hello and Happy New Year,

Looking for any suggestions on a fix for a spare Tempest boardset. I got this and several other PCB's for free from a local Op who was cleaning house, when I plugged it in my game there was no Y output, found that C13 was bad, replaced that and now I have voltage swings on both X&Y outputs. Someone replaced all the TLS082 chips and I verified that they are good. So here is where I'm at, 6100 fully functional, all voltages on PCB correct, goes into self test, no tones heard except the 4 decending tones, game plays blind as far as I can tell. Spot killer "on" and when I turned up brightness momentarily to override it, the screen just showed a small red dot in the center. Thanks in advance for any help.

Rich

Green Bay

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Received on Tue Jan 3 14:22:58 2012