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previous: Craig 60Hz.If it could even hum t... -- 1/20/2004 5:17 AM view thread

Re: Ampeg V4 w/6550s hums like crazy

1/22/2004 4:15 AM
Mike @ Vintage Amplifier Service
Re: Ampeg V4 w/6550s hums like crazy
Craig,  
If the hum is 60 Hz,(like the hum you get  
with an open guitar cable),then look for  
a possible ground loop or an open ground.  
Bad filter caps would give you 120 Hz.  
Try jumping a 20@600v across the caps in  
the amp and see if the hum changes. Also,  
make sure any previous repairs have not  
fallen apart. I spend a lot of time repairing  
previous repairs. Sloppy mods are a constant  
source of problems. Poor workmanship abounds.  
(YOU KNOW WHO YOU ARE, SCHLOCKS). Mike

 
Replies:
Wild Bill "I spend a lot of time repairing pr... -- 1/22/2004 3:10 PM