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Antique Radio Technical Forum
Freshman Works Great Topless

Posted by George T ~ Norm / Warren on 04/27/2009 21:35

Thank you both, put in higher value Electrolytic Caps and it reduced the hum a lot. Still have it though but it isn't bad enough to worry about. I think when you put the case on it it amplifies the sound and brings out the hum more accoustics maybe. I believe there is a bad resistor that is changing value when it heats up. The volume changes from good volume to lower volume then it comes back up to normal after 5 or so minutes and plays fine after that. Already changed the tubes out and they didn't make a difference. Maybe after I get it to stablize I'll loose the hum all together. One can only hope. Thanks, George T

Freshman Works Great Topless 
George T 04/23/2009 22:34 
Warren 04/24/2009 02:08 
George T 04/26/2009 00:50 
Norm Leal 04/26/2009 10:20 
George T ~ Norm / Warren 04/27/2009 21:35 
JF 04/28/2009 16:40 
George T 04/28/2009 22:03 

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