[R-390] agc repair

Mon, 12 Apr 2004 20:03:23 -0400

Gene, agc voltage is very feeble. Any gassy/leaky tube, usually a 6ba6, or a 
leaky cap in the agc circuit will suck down the voltage. There is no easy 
way to find the leaky cap. It usually involves cutting one end free, and 
using a megger or the old fashined magic eye cap checker. Good luck.

Steve....KJ8L

>From: "Gene Dathe" <[email protected]>
>To: [email protected]
>Subject: [R-390] agc repair
>Date: Sun, 11 Apr 2004 19:14:20 +0000
>
>The Agc on my 390-A doesn't work.  Substituted V506, V508 and V509 with new 
>tubes, no help.  No agc voltage appears at TB102 3 and 4.  Any thoughts on 
>where to start?
>
>Thanks, Gene  NA�G
>
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