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Old 10-01-2019, 10:22 AM
old_coot88 old_coot88 is offline
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Join Date: Sep 2009
Posts: 2,646
Quote:
Originally Posted by vortalexfan View Post
I'll definitely check those things out for sure.
But by all means start with this from Electronic M:

Quote:
Procedure: disconnect C1a positive and L1 from pin 2 of 5U4. Measure resistance to ground at pin 2 if the resistance is that specified in the service literature or higher then the shot is not in the tube or power transformer (but if it meaures well below spec resistance spec the tube socket and or power transformer are prime suspects).
With C1a+ and L1 disconnected from pin 2, you should read infinite resistance (open circuit) from pin 2 to ground. If so, that eliminates 5U4 socket and xfmr as suspects. Then proceed 'downstream' per Electronic M's directions.
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