cfcubed
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- May 1, 2007
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So as this seems to be related to change in source need to know results of this: check if your source has DC offset (DMM mV measure bet its L & G and R & G)
ken vip - With tube in please carefully measure & let us know DC volts for TB+ / SG and tube type + heater voltage (DC between tube pins 4 & 5).