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cobra
Newbie Alert
Joined: 31 May 2007
Posts: 1
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 Posted: Sat Jun 30, 2007 12:12 pm Post subject: hiwatt lead 50 head |
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| i was playing this amp that i'm thinking of buying from a friend, when the volume kept dropping to about half of what it was at, intermittantly. I shut it down and let the tubes cool and made sure none were loose, they seemed to be seated fine, powered it back up and the same thing kept happening. a slight rap on top of the head would bring it back to normal volume, then our bass player started plinking on the tubes while i played and this killed the volume altogether. the amp still powers up, tubes light up - no sound any suspicions out there as to what's wrong? |
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tw001_tw
Fierce Poodle
Joined: 26 Mar 2007
Posts: 279
Location: St. Louis
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| Posted: Sun Jul 01, 2007 8:32 am Post subject: |
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bad tube or maybe a solder connection.
Impedance of the speakers matched what was expected though, right?
exluding the tube angle, you kinda described an output transformer going bad. |
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arclight05
Sea Monkey
Joined: 02 Sep 2007
Posts: 10
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| Posted: Wed Dec 05, 2007 11:13 pm Post subject: Re: hiwatt lead 50 head |
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| cobra wrote: | | i was playing this amp that i'm thinking of buying from a friend, when the volume kept dropping to about half of what it was at, intermittantly. I shut it down and let the tubes cool and made sure none were loose, they seemed to be seated fine, powered it back up and the same thing kept happening. a slight rap on top of the head would bring it back to normal volume, then our bass player started plinking on the tubes while i played and this killed the volume altogether. the amp still powers up, tubes light up - no sound any suspicions out there as to what's wrong? |
Rectifier |
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