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I had a dead ampeg V4 come in today and noticed it still had it's polarity switch hooked up. I have worked on these amps before and they have always had this switch disconnected and that capacitor removed. Is this an action I should take as well? That is with the customers approval of course.
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It should have a three wire mains power cord. Otherwise, you could get a hum and/or a mild shock anytime you touch ground.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 ! -
I thought all amps with 3 prongs didn't have polarity switches, but this amp is 3 prong from factory with a polarity switch, Check the schematic...Comment
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No, back in the '70s a lot of amps came with 3 prong ac cords and still had polarity switches, but they usually were 3 position center off switches. Silverface Fenders and lots of Peavey amps come to mind.Originally posted by Tage View PostComment
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ok so should I at the least put an X rated cap on it in stead of the 600V mallory oneComment
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I would just disable the polarity switch and be sure you have a secure ground connection."In theory, there is no difference between theory and practice. In practice there is."
- Yogi BerraComment
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I would too. Just disconnect the cap. There's really no reason to have it connected.Comment
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If the customer disapproves and for some reason wants to keep the death cap in circuit and not brought up to current code, either have them sign a waiver stating that they have been warned of the electrocution hazard, or replace it with an X-Y cap.Comment
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