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Full Version: Ampeg SVT 3 Pro
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I have a 3 pro SVT that has a very slight overdriven sound on some of the lower notes on E & A strings.. it is very light but bugs me even at low volume. 
My problem is when testing the bias I am getting nothing on one of the test resistors and the others are all over the place. 
What do I look for or do to it. I am very handy was a mechanic for over 27 years. And very good with a soldering iron.