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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Converting 1960s Fender amp for 240V UK use
Of course the owner wants it to be as original as possible or at least
retrievable. I've convinced him that a fully bonded earth point to the chassis is absolutely necessary for use in the UK, no getting away from that. Hopefully the US mains cable rubber insulation will be perished and will need replacing anyway so would then be 3 core. He definitely does not want the step down transformer mounted in the cab, but external . But if original US mains cable and US plug retained. I'm thinking earthing coloured multistrand flexible third cable run alongside the US cable with black heatshrink over the near-enough whole length. The problem is what connector to use for reliable earth continuity to the step down Tx and UK mains cable and how to make a mechanical interlock, in effect, so the amp cannot be run without the third wire connected. Then what to do with the original "ground" switch ? presumably disconnect but leave in place internally . Do US three pin variant outlet, purpose made, step down transformers exist in the UK, I only ever see 2 pin outlet ones. Assuming he can tolerate swapping, but retaining with the amp, the ancient 2 pin plug. |
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