TECHNICS SP10 MK3 POWER SOURCE / SPEED CONTROLLER

Many factors are to be taken into consideration, much will depend upon geographic location, private or commercial seller, operational and cosmetic condition, whether or not the unit is original or restored (including the origination of service) and native voltage operating requirements. The rarest type, universal selectable 110v/120v/210v/220v/50Hz/60Hz voltage Technics Sp10Mk3 power supply will most typically demand higher prices than the most common 100v/50Hz/60Hz power supply or even the less seldom seen 120v/60Hz North American model. Considering the vital role of the Sp10Mk3's power supply, which of course contains the primary logic, drive and controller boards, its value will well exceed that of just an orphaned Mk3 motor, platter unit. I am afraid there is no etched in stone black and white answer, however, the market will usually dictate the demand and subsequently the asking price of rare and desirable components such as this.

Atmasphere,

Would you describe this method of conversion or some source of information?

Thank you,

C

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