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Vectrex with buzz but no sound


shear_xear
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Hi everyone. I have a Vectrex that I am trying to bring back from the dead. I am getting close with the picture and balancing the pots and yoke, but I still have no audio. The hum is back, but just none of the sound. I have disconnected and reconnected the cable connecting the two boards and cleaned and reset the sound ic. Any ideas on what to look at next? Thanks!

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You'll just have to trace it backwards in the circuit with a scope until you see audio. Without a scope and only "shotgun" approach you are limited to just guessing. I would probably start with the volume pot first, then the audio chip.

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