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I rebuilt my power supply and got my qbert working again but the sound board appears to be dead. I just get a hissing sound out of the speaker when I have the sound board installed.

  • Voltages are good now that I have rebuilt the power supply.
  • The sound board has no discoloration. Nothing burnt. It looks really clean
  • The heat sink on the LM379S did not give off any heat after playing for 10 minutes. Considering the size of the heatsink I assumed it would be warm.
Does a dead LM379S result in just a hiss for the output or should I look elsewhere?
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