Hi,
My Bally Elektra lost the sound. The Squawk and Talk went from working to dead. When checking the voltages to the board I get zero volts at the -5V test point. There is -2,5ish on the connector at pin 7, and looking at the schematics the circuit has a "voltage doubler" so I'm guessing that the input value is correct.
Any thoughts?
Cheers,
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Elektra (resized).png