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It is in fact a shorted tube, it was the number one tube, or the one farthest to the left looking from the front of the amp.

No evidence of a diode blowing out, so I ordered 4 matched 811A's from E-Bay and will have them on Wednesday. I will replace all 3 tubes and that will leave me with 3 extra's as needed.

I have the factory installed Tubes from Ameritron, no idea who the manufacturer is but they are probably the cheap Chinese Tubes.

I'll post up when I get the Amp back working..

Craig

[QUOTE="W1MSG, post: 239776, member: 13274"] It is in fact a shorted tube, it was the number one tube, or the one farthest to the left looking from the front of the amp. No evidence of a diode blowing out, so I ordered 4 matched 811A's from E-Bay and will have them on Wednesday. I will replace all 3 tubes and that will leave me with 3 extra's as needed. I have the factory installed Tubes from Ameritron, no idea who the manufacturer is but they are probably the cheap Chinese Tubes. I'll post up when I get the Amp back working.. Craig [/QUOTE]

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