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38 116 low volume after recapp
rghines1
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Posts: 190
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City: Lexington, SC
#2

06-07-2012, 03:58 PM
Think you may have lost negative bias on the 6L6 push-pull stage. Should see about -20 volts on the G1 grids of both tubes. Otherwise you will draw excessive current pulling down everything.

Suspect cap 140A that connects to the center tap of the high voltage winding was installed with wrong polarity. Positive side connects to the chassis unlike the other electrolytic caps. Remember the center tap is the most negative point in this radio.

Next would check resistors 134 and 135.

http://www.nostalgiaair.org/Resources/234/M0013234.htm
(This post was last modified: 06-07-2012, 03:58 PM by rghines1.)
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Messages In This Thread
38 116 low volume after recapp - by SteveJB - 06-07-2012, 03:03 PM
RE: 38 116 low volume after recapp - by rghines1 - 06-07-2012, 03:58 PM
RE: 38 116 low volume after recapp - by 7estatdef - 06-07-2012, 09:14 PM
RE: 38 116 low volume after recapp - by SteveJB - 06-07-2012, 09:42 PM
RE: 38 116 low volume after recapp - by 7estatdef - 06-08-2012, 06:54 AM
RE: 38 116 low volume after recapp - by SteveJB - 06-08-2012, 10:17 AM
RE: 38 116 low volume after recapp - by codefox1 - 06-08-2012, 11:09 AM
RE: 38 116 low volume after recapp - by SteveJB - 06-08-2012, 11:34 AM
RE: 38 116 low volume after recapp - by rghines1 - 06-08-2012, 04:41 PM
RE: 38 116 low volume after recapp - by SteveJB - 07-17-2012, 06:39 PM



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