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Topic: Twin Reverb Help |
Frank McBride
From:
Clendenin, West Virginia, USA
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Posted 31 Oct 2004 7:17 am |
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| I have a twin that will sometimes hum loud or crack up when I lean it back,it will not do it setting flat on the floor,when it dose this I notice one of the 6L6 tubes will spark inside {BLUE} Looking frome the back of the amp.it has 4 6L6s,from left to right it is the first tube. It is a 65 RE. I had one like this before and it had 2 loose caps. in it,I checked the board an it seems to be ok. THANKS |
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Bill Crook
From:
Goodlettsville, TN , Spending my kid's inheritance
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Posted 31 Oct 2004 7:28 am
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Without attempting to be a smart-a$$, just replace the 6L6 that is sparking. That will fix your problem.
| Quote: |
| hum loud or crack up when I lean it back |
That tells me that the tube(vale) is defective. It will only get worst. Should you continue to use the amp with a shorting tube in it, you may have to replace tube,plus a couple of transformers as well.
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http://home.comcast.net/~crookwf/
http://f1.pg.photos.yahoo.com/ph/crookwf/my_photos |
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Frank McBride
From:
Clendenin, West Virginia, USA
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Posted 31 Oct 2004 7:48 am
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| BILL. Thank you I have another tube it is a 6L6-GC will it be ok to replace the GT6L6B with it or do I need to change all 4 THANKS |
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Mark Herrick
From:
Bakersfield, CA
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Posted 31 Oct 2004 12:23 pm
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Check your tube sockets as well. You may also need to re-tension the metal contacts inside the socket holes (only do this with the amp unplugged and the filter caps discharged) or you may need to replace a socket.
You should be able to replace the single tube for purposes of testing to see if you still have the problem. I, personally, wouldn't leave a mismatched set of tubes in the amp, but it should be OK for a quick test. You might also first try swapping the suspect tube to another socket to see if the problem still occurs with the tube in a different location.
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[This message was edited by Mark Herrick on 31 October 2004 at 12:34 PM.] |
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jim milewski
From:
stowe, vermont
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Posted 31 Oct 2004 6:14 pm
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| I think pulling the tube out as a test and lean on it will reveal if it's the tube |
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Mark Herrick
From:
Bakersfield, CA
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Posted 31 Oct 2004 9:55 pm
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| ??? |
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Frank McBride
From:
Clendenin, West Virginia, USA
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Posted 1 Nov 2004 8:03 am
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| GOT IT FIXED. Thanks Bill,Jim,Mark, All of the above was the problem, the tube tested ok in the tester, leaned the tester an it showed BAD. [never seen that before]I was getting woried my neighbors where starting to get friendly. THANKS AGAIN---FRANK |
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