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Old 01-10-2017, 06:37 PM
Findm-Keepm's Avatar
Findm-Keepm Findm-Keepm is offline
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Join Date: Jun 2007
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Why M1 (B+ rectifier)? Most resistance readings are taken from Chassis ground - using M1 as a reference for any DC or Ohms measurement will result in odd values - those doubler caps charge and discharge, giving odd values. Clip the negative lead to chassis, and measure to the pins....

Lower left of Page two on the Sams gives the instructions - common negative (Chassis)....

Have you verified the resistances of the ground traces on the board to the chassis - measure the trace, not at the corner eyelets. Those eyelets are 90% of the problems with most RCAs. IIRC, you resoldered those early in the thread.
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Last edited by Findm-Keepm; 01-10-2017 at 06:41 PM.
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