Very Low Plate Voltage on 1 Power Tube - Push/Pull

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GypsyDavey
Posts: 13
Joined: Fri Jul 31, 2020 6:36 pm

Re: Very Low Plate Voltage on 1 Power Tube - Push/Pull

Post by GypsyDavey »

:lol: I had left a bleeder wire clipped on the centertap to ground and forgot to take it off before I made the measurements! Both pin 3 measurements show open now, no reading. Time for me to step away and go to bed now.
GypsyDavey
Posts: 13
Joined: Fri Jul 31, 2020 6:36 pm

Re: Very Low Plate Voltage on 1 Power Tube - Push/Pull

Post by GypsyDavey »

Hey guys, just got back from vacation. Just to clarify, I didn't have the jumper on when I measured the plate voltages, there is still almost no plate voltage on one of the plates. I only had it on there when I took resistance readings, which is why I got the resistance of half of the OT to centertap with each plate instead of showing open like it should have. Any other suggestions?
Stevem
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Joined: Fri Jan 24, 2014 3:01 pm
Location: 1/3rd the way out one of the arms of the Milkyway.

Re: Very Low Plate Voltage on 1 Power Tube - Push/Pull

Post by Stevem »

If both of the wires on pin 3 of your output tubes test good for resistance to the center tap, and test good for equal voltage with the tubes out of the socket but with the tubes in and trying to pull current and then you find / read no V+ on one tube, then the OT is plain and simply bad!

Case closed!

Finito!
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Not screaming like the passengers in his car!

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