My small stone 4800 blew 2 resistors, R1 and R27. I replaced them but still not working. I checked all op amps and got 18v on pins 4 to 7. Any ideas? Thanks in advance.
I was powering with a 9v isolated power supply when they blew. Could one bad IC cause 18v output on all of them? Could it be a faulty transistor? Guess I am not quite sure where to start tracking down the problem since output reading on all IC’s is the same and the three electrolytic caps and the 4 transistors have continuity. Thanks.
