Friend brought his turntable not working.. It was old Omnitronic DD-2250 poor thing, no reasonable spare parts available, of course..🎉 Problem was broken wire of primary coil in mains transformer..♻🆗🚮
So i replaced the old double secondary transformer with single secondary toroidal one(~10€), plus DC-DC supply with LM2596(<2€).. 🆒
The switching-mode power supply is adjusted @ 15V DC and connected just where the original AC wires were plugged, counting with voltage drops on rectifying diodes and stabilizer LM7812.. Reason was to modify as little as possible to keep things simple..
I was shocked by tremendous 400mA current when i stopped the motor with two fingers..😂😂😂😂😂🤣
Normal spinning took only 80mA, its so greeeeenNNN!!!✅♿ 🤣
(measures were done DC powered @ 29.5V and 15V)
Update: Its still working after half of year..💪🎶🔊