I’ve been successfully troubleshooting a Super Beatle head (1141) and have come to the conclusion that someone has altered the wiring to the large “metal can” caps located in the power supply. Can someone tell me how these are supposed to be wired? The schematic indicates two 5000uf caps. Are both of these caps in the same can? If so, what is the other can for? The markings on the cans are unreadable. If these are dual caps, then it seems like I have more capacitors than the schematic indicates. Thanks!
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Super Beatle Caps Question
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If those caps are original, the terminals are marked by symbols on the brown bakelite next to the terminals. The "triangle" terminal is the + side of the cap and the "D" marked terminal is the - side. There is no connection to the case.WARNING! Musical Instrument amplifiers contain lethal voltages and can retain them even when unplugged. Refer service to qualified personnel.
REMEMBER: Everybody knows that smokin' ain't allowed in school !
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Thank you loudthud for the quick response. This explains everything. Don't know why I thought those were dual caps.
However, these caps and others along with the power tranny center tap were grounded to one of the grounding lugs on one of the metal can caps and the lug had broken off of the chassis, the other leads remained intact. I this an issue with the chassis being disconected from the center tap and other "grounds"?
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I'm not sure if the chassis really needs to be grounded. Are there no other connections to it? But if it was originally grounded, I'd do that.
Those Vox/Thomas caps are the only ones like that I have ever seen. They certainly look like dual caps. All the others have the minus side connected to the case. The alternative would be to use a bakelite mounting ring and insulating sleeve. Back in the 60's, axial leaded parts didn't go that high in value.WARNING! Musical Instrument amplifiers contain lethal voltages and can retain them even when unplugged. Refer service to qualified personnel.
REMEMBER: Everybody knows that smokin' ain't allowed in school !
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