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Searched for: 7915, Found: 3 lines
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Found that 15v regulator is stuffed. Suspect that 15v rail on the analogue input stage is shorted. J
Thanks for the vote of confidence!!!! All good now, the replacement -15v regulator was actually f

Sorry, my mistake! Yes it is the -ve 15v rail. I replaced the 7915 and same thing occurs, powers

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