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Is 220mA too Hot?

5/23/2000 5:17 PM
Dan ZIs 220mA too Hot?
Help! I tried to blackface my 71 Bandmaster Reverb, and now I read 220mA for the bias with the Transformer shunt method as described in G. Weber's book. Yes, the tubes get an orange streak on the plate, so I haven't had it running for more than a minute of two at a time. Where did I mess up to let the tubes see that much current? Any suspect components to look at first, or should I just start over?  
 
Thanks,  
 
Dan

 
Replies:
Peter S 220ma is a HUGE amount of current. ... -- 5/23/2000 5:50 PM
Jim S. I think you have a bias fault. Wit... -- 5/23/2000 6:30 PM