Rusty,

This sound serious there is no real reason why the fuse should blow, I would think that the USB is optically isloated and within reason whatever PC you plug it into there should not be a problem. I think you are in for the same again when you replace the fuse, do not put a bigger fuse in the KB, better still striaght back to where you bought it from, not Germany it hope.

Tony
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Tyros 4/Pair SR 350/ PC with a i8 intel chip, XENYX 802, Ford Focus 2 litre/Tascam DR07/Brother printer/Designjet 500/ our Doris/5 Grandchildren/ white boxers short Kymart shipped over and Typhoo Tea Earl Grey