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ms660 · 13th May 2021, 4:33 pm

In the schematic the voltage on the base of the output transistors is shown as 0.12 volts DC WRT B+, which is correct given that the output transistors are PNP, the voltage measurements can indicate -ve or +ve depending which way round the meter probes are connected.

EDIT: Post crossed.

Lawrence.

13th May 2021, 4:33 pm	#9
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Selga 405 audio problem. In the schematic the voltage on the base of the output transistors is shown as 0.12 volts DC WRT B+, which is correct given that the output transistors are PNP, the voltage measurements can indicate -ve or +ve depending which way round the meter probes are connected. EDIT: Post crossed. Lawrence.