Re: One output transformer hotter than the other

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Posted by hurdy_gurdyman [ 4.229.162.207 ] on August 19, 2005 at 10:34:27:

In Reply to: Re: One output transformer hotter than the other posted by Poindexter on August 18, 2005 at 17:53:30:

Poinz,

Just before I read your post this morning I did some more tinkering. Pin three has been adjusted on each tube to read 0.5 VDC (was a bit higher.) All plates read the same at about 420 VDC (my meter isn't very fine at this high of a voltage.) I'm getting - 16 VDC at the grids (pin 2.) I believe somewhere I stated -32, but it seems I was looking at the wrong scale (my eyes aren't as fine as they used to be.) No DC off-set between pins 2 of a pair of tubes. I'm going to let it run awhile and see what happens. If the right channel is still hotter, I'm going to assume that it's because it is located between the other output tranny and the 5AR4 and power tranny. If the transformer has something inside it shorting a bit, there's not much I can do about it, so might as well run it. It's been going for about a year on this set of JJ/Tesla EL-84's with no problem, so perhaps I'm just being paranoid.

Dave


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