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Post by Bob on Jul 16, 2005 19:24:59 GMT -5
Hi Jerry, I did the bias mod and it dials in good on the bias probe but the power tube on the far left( back of amp) is not reading any mA. I swapped tubes and it does the same thing. I moved the test socket to another position and it works. What could be wrong with that tube position and is it related to the mod?? I never checked bias with my dual probe on this amp before the mod. Thanks, Bob
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Post by Jerry P on Jul 17, 2005 18:39:59 GMT -5
Sounds like you have a bad screen grid resistor on that tube socket. It's not releated to the bias mod. Jerry
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