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Everything is in the title. Do the JCM2000 power transformers have taps for 220V, or did the international versions have different trannys?
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I have used my TSL 100 on tour in the US, Europe, and Australia. Pretty sure Marshall used the same PT on all 2000s, regardless of where they were to be sold. You just swap a few wires around to use the PT primaries in series instead of parallel. The stock PT will get you about 500V B+ with 120VAC on parallel windings or 240VAC on series windings. European 230VAC or 220VAC will give you a slightly lower B+, but the amp plays fine and it's really not noticeable.
See the schematic to check which wires should be rearranged. They are the spade connectors on the mains input board with the fuses, which connect to the PT.
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