[Hallicrafters] SX28 hot & blue 6V6s


Carl km1h at jeremy.mv.com
Thu Aug 25 21:22:16 EDT 2011


Likely leaky input coupling caps putting some positive bias on the grids. 
That will also take out the transformer.

Carl
KM1H


----- Original Message ----- 
From: "Guido" <laffitte at prtc.net>
To: <hallicrafters at mailman.qth.net>
Sent: Thursday, August 25, 2011 8:40 PM
Subject: [Hallicrafters] SX28 hot & blue 6V6s


> Gents,
>
>  It has been a while since my last post but I keep a daily track of this 
> list. My SX28 had its first audio transformer replacement about two years 
> ago with two new audio tubes. These are running hot and with a clear all 
> around bluish glow. They run too hot and I don’t think this is normal 
> although we know that 6V6s tend to run with some extra heat but not this 
> much. I am sure that this has been discussed before but either I missed it 
> or my almost 59 years neurons are being depleted. Opinions will be 
> appreciated.
>
> Best 73s
>
> Guido KP4FAR
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