Current Answers
Answer #1: Posted by rpslade on February 4th, 2011 1:43 PM
rpslade
Member since:
February 4th, 2011 Points: 1,100
Member since:
February 4th, 2011 Points: 1,100
I have been given a set with the same problem. One or more of the supply voltages on the PA board are down. In my case, the 9V supply was pulled down by a short in the 9V to 30V converter. With set unpluggedcheck pin 1 on each of the 5 regulators IC 7501-7505 for low resistance short to ground. Mine was IC7502 and Q7582 was shorted
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