This is a very neat and nice PCB upgrade for Thorens turntables. It’s possible to use it with almost every other turntable that includes 16 to 24 pole synchronous motor.
The idea was to have a small PCB which includes both protection and power-off function. The PCB itself is a one-sided board with black solder mask on both top and bottom layers. I’ve decided to include optional drills for other capacitor sizes. This will make it possible to “adjust” the board for other Thorens models of even other turntable makes like Linn or Ariston.
The schematics is quite simple. Nothing special here. Just a phase capacitor and a voltage drop resistor. I’ve decided to include a quick-blow fuse just for safety. Speaking of safety – all caps are X2 class which guarantees safety. No place for “audio-grade” or “special-sound” capacitors here!
This is an example photo to show one possible location for the board. I’ve used a simple epoxy glue to fix the metal standoffs to the wooden plinth.
I’ve decided to make these boards available for sale on my eBay page. You can visit the listing here ->>> eBay Store
Would it also be possible to build in a speed regulator, some if not most TD160’s run slightly (upto 1%) to fast.
it is possible with MCU and some clever code.
Is this upgrade also doeing something for the motor run? So (in)derect improves sound quality?
Is this available in Holland ?
Arie van Kralingen
I can’t find the Thorens Power Supply Upgrade TD-150, TD-160 on ebay
Hi there, still available?
Link has been updated.