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PJL · 16th Oct 2019, 11:31 pm

Focus on the DC conditions (no signal). You should be able to compare the voltages with the good amplifier. Then markup the transistor voltages on a copy of the circuit noting any differences and post back here, Laborious, but the best way to diagnose the fault.

16th Oct 2019, 11:31 pm	#4
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Goodmans Model 150 Amp Fault Focus on the DC conditions (no signal). You should be able to compare the voltages with the good amplifier. Then markup the transistor voltages on a copy of the circuit noting any differences and post back here, Laborious, but the best way to diagnose the fault.