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Old 4th Dec 2021, 9:08 pm   #37
Gabe001
Octode
 
Join Date: Oct 2019
Location: Stockport, Greater Manchester, UK.
Posts: 1,646
Default Re: Bush DAC90A hum - AGAIN!

It doesn't look like it's the heater chain then. Maybe you could try the velleman signal tracer next? Start at the volume control and work your way forward along the signal path.

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