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In Reply to: RE: Odd discovery inside a 43 year old Fender amp posted by Alpha Al on June 04, 2015 at 13:30:34
I do mostly stereo tube amps and preamps, but I also do 5-10 guitar or bass amps every year for local musicians. Last year a guy brought in a Fender that was a modern production tube amp made in Mexico, well modern in that it was made in the early - mid 1990's as I recall. He wanted me to re-cap the power supply and he said the reverb circuit had never worked correctly and could I look at it. So I replaced the power supply caps for him and biased it and then looked at the reverb circuit, and sure enough, one of the electrolytic caps on the board had been soldered in backwards at the factory. Put a new cap in there with the right polarity and the reverb worked fine. I understand that mistakes can be made, but you think they would quickly test all of the functions on an amp before then sent it out the factory door!
Follow Ups:
I suspect that the people assembling this stuff have on idea how it works.
Dave
CORRECTION The amp was a Fender Bandmaster not the non-existant "Musicmaster". Brain Fog...
Please, mine your own bismuth, so you won't be mining mine !
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