There is an authorized center in the next town over from me. They charge a non-refundable $60 bench fee. Their repairs always seem to be way high, for instance, they charged me $150 for a pair of Groove Tubes 6L6 and a rebias. Come to find out later, there was a bias pot on the pcb, and the pot was accessible without removing the baord. (I think it was a Carvin, can't remember for sure.) To me, that's a royal screwing, and I can't trust them.
That in and of itself is Highway Robbery. With a few exceptions, Groove Tubes are all re-labeled brands... they buy 'em
in bunches, test them, then apply their own silly categorizing scheme to each t00b... and raise the price.
It's no different than say if you gave me a quarter, and I took a rag and polished it some, stuck a label on it and sold it to you for 50 cents. :laughing11:
So, you know all those commercials, etc that talk about "cutting out the middle man" to save $$$? Groove Tubes is the epitome of the middle man.
If you're comfortable with soldering, a cap job ain't much. The key is (and for all amp repair/modding/biasing) to *drain the caps*.
The caps hold a charge which can be lethal.
Once you get that technique down (draining the caps), the rest is (typically) cake.
That's the issue, I'm, quite frankly, chickenshit when it comes to handling those caps, because I know about the voltages.
I 'm pretty sure I've figured out how to drain them, and I can measure the voltage, but the one warning that always gets me is about the caps recharging.
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