TECHNICS SP10 MK3 POWER SOURCE / SPEED CONTROLLER

Its simple: You can use a small power transformer that makes 20 volts to 'buck' the US AC line voltage down to 100volts (120V - 20 =100V).

The transformer need only handle the current required which is not a lot. The result is that it would be so small you should be able to find room in the power supply, despite its rather tight construction.

Any competent technician will know how to set up a bucking transformer connection.

120V to 100V step-down transformer is a common item that can be bought from eBay or any reputable mail order electronics supply house for low dollars. I have two of them in house, one for a Kenwood L07D and one for a Denon DP80. No biggie. Just make sure the wattage rating is more than adequate for the Mk3 supply, if indeed you can find any Mk3 supply.

PBN, I have seen that SP10 PS from England before. If memory serves, it is for a Mk2, not for a Mk3. But I sure could be wrong. As Chris points out, the Mk3 supply is much more difficult to build from scratch and much more complex, compared to a Mk2 supply, because it contains all the servo logic circuits, whereas in the Mk2, the analogous circuits are built into the TT chassis proper. The Mk2 outboard supply is naught but a source for regulated DC voltages needed to run the works. So, if the OP is still listening, be sure to ask whether that PS works for a Mk3, if you are at all interested.

Lewm, you are absolutely right the one above I suggested is for a Mk2, not a Mk3.
Recently picked up a MK2 sans its power supply for restoration, so I had to make a replacement power supply, turned out rather nicely I think.

SP10Mk2 Replacement Power Supply

Good Listening

Peter

That's lovely, for someone with a Mk2 or 2A. I am loving my Mk3, however, now with Krebs modification. Was listening to it all day today. Incidentally, if the OP is still alive and still cares, it is not out of the question that Richard Krebs might know who or how to build a Mk3 supply complete with servo circuits.

Lew, Just for the record the bucking technique I described does not use an isolation transformer and is a lot less expensive- literally can be done for under $20.00 in parts.