Posted by Damir [ 213.202.115.71 ] on April 25, 2006 at 07:07:49:
In Reply to: Re: DeVille 212 amp trouble. posted by James on April 24, 2006 at 16:59:53:
With absent negative "bias" voltage on g1 (pin 5), the tube "draws" large current and quickly overheats. PCB traces can be "intermitent" `cos of heat, vibrations and by pushing tubes in the sockets. Clean burned carbon marks (conductive) on the tube socket, if old tubes remained any. Good luck!
"That`s one small step for a man, one giant leap for manikin."
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