UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

resurgance · 4th Jun 2021, 9:03 am

Hi there,
I understand that Hickok is mainly US and AVO is more UK, so apologies if this is not quite the place for thjs question?
I have a 539b with a bias gauge sans adjuster but reading above zero.
Any ideas please on how to return this to zero?
It reads this way unpowered as well as powered.

Thanks
Stew Thorp
ZL2VA

4th Jun 2021, 9:03 am	#1
resurgance Triode Join Date: Apr 2021 Location: Nelson, New Zealand Posts: 15	Hickok 539b bias gauge Hi there, I understand that Hickok is mainly US and AVO is more UK, so apologies if this is not quite the place for thjs question? I have a 539b with a bias gauge sans adjuster but reading above zero. Any ideas please on how to return this to zero? It reads this way unpowered as well as powered. Thanks Stew Thorp ZL2VA Attached Thumbnails