Re: Request for assistance from Nigel


John
 

You have my sympathy!

- First, check that the main HT's are in spec (+75, -12 and +12).
- I'm assuming the scope produces a trace with auto-trigger, but won't synchronise to the input signal? If this is the case, I'd focus on the circuit around and including Q623, 624, 636 and 646. The manual gives DC's and waveforms for this region, so check those initially.

John

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