I don't typically have issues with my customers, but one guy is testing my patience. A couple of years ago I rebuilt a hurricane damaged 65 Super Reverb for him by building a new glass board and birch baffle. Then he got a squeaky clean 65 Vibrolux Reverb that I did a cap job, and several other things to square it up. He brought it back to me for squealing and whining noises. One of the plate resistors came apart as I lifted one leg to measure it, and all the others had drifted out of spec, so I replaced them all. Problem solved, charged him $65.
Three months later, he goes to use the amp at a gig, but it is making to much hum and other noise, so he brings it back, unhappy. This time I find the board has stray voltages all over it. We are in our humid season down here in SWFL, so I think the board is absorbing moisture and is going conductive. I also find several, actually almost all of the ceramic caps are leaking, so I replace them. While I have a cap out, I check the resistors nearby, and find several out of spec, so I replace them also. Then, as I am doing this I find two resistors in the PI are grossly wrong from the factory, so I correct that. I hit the board with a heat gun, and now things are back to normal, and as quiet as a 55 year old amp with many original components can be. This bill is $129.
I call him, and he is upset. He complains that I just did a repair (he's not sure what), and "it wasn't cheap" ($65). And now he has to pay for more work, and he doesn't want to have to bring it to me any more, and he thought I told him it should be good after all the work I have done, so what is going on?
I explain to him about the humidity and conductivity being a fact of life with these fiber board amps. I told him I found wrong parts in it that I wasn't looking for the other times. I said I can fix your problems, but I cannot, as no one can, tell you if you won't have future failures, and that the work I did on the plate resistors has not a thing to do with your current issues. And I am going to tell him when he comes to pick it up that maybe he should find somewhere else to bring it when the amp has it's next problem. I will also point out that it still has mostly 55 year old carbon resistors in it, and short of shotgunning them all, he probably should expect future noise and other issues from them. But, of course he paid premium dollar for an almost dead stock clean vintage amp, so why would he want to start changing parts?
Just kill me now.
Three months later, he goes to use the amp at a gig, but it is making to much hum and other noise, so he brings it back, unhappy. This time I find the board has stray voltages all over it. We are in our humid season down here in SWFL, so I think the board is absorbing moisture and is going conductive. I also find several, actually almost all of the ceramic caps are leaking, so I replace them. While I have a cap out, I check the resistors nearby, and find several out of spec, so I replace them also. Then, as I am doing this I find two resistors in the PI are grossly wrong from the factory, so I correct that. I hit the board with a heat gun, and now things are back to normal, and as quiet as a 55 year old amp with many original components can be. This bill is $129.
I call him, and he is upset. He complains that I just did a repair (he's not sure what), and "it wasn't cheap" ($65). And now he has to pay for more work, and he doesn't want to have to bring it to me any more, and he thought I told him it should be good after all the work I have done, so what is going on?
I explain to him about the humidity and conductivity being a fact of life with these fiber board amps. I told him I found wrong parts in it that I wasn't looking for the other times. I said I can fix your problems, but I cannot, as no one can, tell you if you won't have future failures, and that the work I did on the plate resistors has not a thing to do with your current issues. And I am going to tell him when he comes to pick it up that maybe he should find somewhere else to bring it when the amp has it's next problem. I will also point out that it still has mostly 55 year old carbon resistors in it, and short of shotgunning them all, he probably should expect future noise and other issues from them. But, of course he paid premium dollar for an almost dead stock clean vintage amp, so why would he want to start changing parts?
Just kill me now.
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