Home » Audio » Thermionic Emissions » One output transformer hotter than the other
Re: One output transformer hotter than the other [message #9171 is a reply to message #9170] Fri, 19 August 2005 09:34 Go to previous messageGo to previous message
hurdy_gurdyman is currently offline  hurdy_gurdyman
Messages: 416
Registered: May 2009
Illuminati (1st Degree)
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

 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Help with '45' problem?
Next Topic: Fisher 500C-how hot is too hot?
Goto Forum:
  


Current Time: Mon Apr 29 08:00:01 CDT 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Smith & Larson Audio
Smith & Larson Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest