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audiophileboss

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on: July 29, 2013, 03:00:13 PM
I know there was a post about this but I can not find it. Ever since my crack has been assembled, there has been a poping or cracking sound at times. Tonight it totally made a blow sound and no left channel. I pulled the jack up to the 2nd position amd both channels again. Whats up?


audiophileboss

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Reply #1 on: July 29, 2013, 03:05:54 PM
One more thing to add. Only 1 led is lit on the 12auf socket. I BELIEVE that is where the problem is


Offline Doc B.

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Reply #2 on: July 29, 2013, 03:17:29 PM
The pulling the jack up thing - you are just putting the working channel through both sides of the headphone when you do that.

You may have a loose conection somewhere. Check carefully for a missed solder joint, If you don't find anything obvious then reheat and reflow the solder joints on the 12AU7 socket, then take your voltage measurements again and report any that are off more than 15% from the voltages listed in the manual.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

audiophileboss

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Reply #3 on: July 30, 2013, 02:02:07 AM
Terminal a2 is loose enough to slide up and down. That has left channel running through it. Could that be a problem?


audiophileboss

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Reply #4 on: July 30, 2013, 02:21:15 AM
Fixed! Re wetted all the joints, and tried to stiffen terminal a3


Offline Grainger49

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Reply #5 on: July 30, 2013, 10:51:03 AM
Here is your other post:

http://www.bottlehead.com/smf/index.php/topic,4612.msg43402.html#msg43402

You might edit it or just delete it.


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