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moid
 Post subject: Need help with problem
PostPosted: Tue Jun 05, 2007 10:38 am 
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My Lightning which has been operating great for a year or two, suddenly started making all kinds of noise when I play through it. Also, when I shut it off it makes a terrible squealing sort of sound. I checked all the tubes except the rectifier. Could it be a bad rectifier? I also replaced the power switch, but it didn't help. Anybody got any ideas?

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Moid
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coco
 Post subject:
PostPosted: Tue Jun 05, 2007 11:10 am 
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Holy Ghost
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But it plays OK and starts-up OK? This is just at shutdown?

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moid
 Post subject:
PostPosted: Tue Jun 05, 2007 12:29 pm 
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No, It starts up kind of quietly, then warms up. When playing it makes all kinds of racket, like loud static. It is quiet when on, but not playing anything.
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coco
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PostPosted: Tue Jun 05, 2007 1:07 pm 
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Did you try sub tubes or test them? Could be a coupling cap, or a connection that has gone 'bad'.

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moid
 Post subject:
PostPosted: Tue Jun 05, 2007 3:45 pm 
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I substituted known good tubes in. Connections looked good. I'll check coupling caps. Thanks
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