I've just finished converting a PL30L II to 230 volts, by removing the internal transformer and replacing it with one that supplies about 20 V AC on the secondary. The voltage isn't that critical and you can go higher or lower (to a point) without affecting the operation of the deck. I have a number of other 100 V decks which I am working my way through as well.
I'm a broadcast engineer who tinkers with hi-fi gear in my spare time. I'm always amazed (and often challenged) by the wide variety of faults that hi-fi gear can have. That said, there haven't been too many units that have got the better of me. Repairing and bringing something back to life is rewarding and satisfying. As you might guess I'm into AM-Stereo - specifically the C-QUAM system.