UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - U12 Rectifier

Boater Sam · 9th Mar 2019, 3:08 am

You could re-stuff the U12 with something like a EZ81, even with only 4v on the heater it may work quite well and look original. Could you find a 6v heater feed somewhere on the chassis? Sorry I don't know the set you have.
Or remove the base and cut the wires, install 2 1N4007 diodes in the base cap. You then need a series resistor somewhere to drop a few volts

9th Mar 2019, 3:08 am	#6
Boater Sam Banned Join Date: Dec 2013 Location: Middlewich, Cheshire, UK. & Winter in the Philippines. Posts: 3,897	Re: U12 Rectifier - purple flash You could re-stuff the U12 with something like a EZ81, even with only 4v on the heater it may work quite well and look original. Could you find a 6v heater feed somewhere on the chassis? Sorry I don't know the set you have. Or remove the base and cut the wires, install 2 1N4007 diodes in the base cap. You then need a series resistor somewhere to drop a few volts