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Old 26th Nov 2020, 2:00 pm   #9
HBWOODY
Pentode
 
Join Date: Mar 2020
Location: Bodmin, Cornwall, UK.
Posts: 147
Default Re: VCM 163 problem while calibrating

I have now gained access to the amplifier and oscillator circuit boards.
First things I checked on the amplifier board were D1 and D2, one of them has failed. I have ordered some new diodes and some new transistors and intend to replace the existing ones.
I did get the correct signal at the RED and BROWN connections on the oscillator board.
I will report back as soon as the replacement parts are fitted.
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