UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Metrix 310B tube tester Meter replacement

Radio1950 · 6th Jul 2020, 10:36 pm

Hi again

This is proving to being all quite curious.

If you have used a 100R resistor for the DPM, try now removing that resistor, have the high impedance 200 mV DPM directly across the 1.01R shunt, and use the M310 on "100 mA" range with a test valve.

I still have to do some investigation, and will get back with some more info next weekend, after I go home from present travels.

Dekatron's post is very good.

6th Jul 2020, 10:36 pm	#25
Radio1950 Hexode Join Date: Apr 2017 Location: Buderim, Queensland, Australia. Posts: 428	Re: Metrix 310B tube tester Meter replacement Hi again This is proving to being all quite curious. If you have used a 100R resistor for the DPM, try now removing that resistor, have the high impedance 200 mV DPM directly across the 1.01R shunt, and use the M310 on "100 mA" range with a test valve. I still have to do some investigation, and will get back with some more info next weekend, after I go home from present travels. Dekatron's post is very good.