Re: [Drakelist] R-4B V7 (6EH5) Problem

2010-05-29 Thread Garey Barrell
Russ - First off, the 6EH5 runs very hot, normally. That said, there are failure modes that can make it run even hotter! :-) Resistance readings of power leads aren't of much use, generally. Depend upon meter type, range used, polarity of leads, condition of electrolytics, etc., etc

[Drakelist] R-4B V7 (6EH5) Problem

2010-05-29 Thread Straate
I recently replaced V7 and now I see that the new one is struggling as well. Very hot and as time goes on receiver gets noisy. I measured the resistance of the socket and noted pin 6 at 5K ohms versus the spec'd 15K ohms. Any suggestions on where to look? Thank. Russ __