HD3S hum problem. - World-Designs-Forum

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HD3S hum problem.

Problems For questions and answers re World Designs Projects

24th December 2020, 12:11 PM

Rhod

Junior Member

Join Date: Nov 2020

Location: Carmarthen,Wales

Posts: 5

Re: HD3S hum problem.

Quote:

Originally Posted by John Caswell

Hi Rhod,
Just as a silly, please measure the heater voltage on the valve base pins 4-5 and report back here.

John

Thanks John, will do.

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