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  #11  
Old 10-02-2019, 07:37 PM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
Workin' Late Again
 
Join Date: Jan 2011
Location: WI
Posts: 3,976
Quote:
Originally Posted by vortalexfan View Post
Unfortunately no, I'm no closer to figuring out what's causing my 5U4 tube to arc and red plate than I was a couple of weeks ago.

I've been testing various components and replacing suspect capacitors in the power supply and I'm not getting anywhere.
So what did you find out when you followed Electronic M's below procedure?

Quote:
Originally Posted by Electronic M View Post
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 short 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).
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