Greetings,
I have an old turntable that I've taken on as a restoration effort. Its well made, and worth spending some time on (but I'd rather not spend much $$, as I'd like to keep it a low budget sleeper build).
The power supply is built to handle both 50hz and 60hz supplies. It is changed at a switch below the platter.
The power input comes into a capacitor that has four poles, and variable capacitance, which I assume make up the difference for the variable supply rate.
When I turn the deck on, it fires right up, and gets to speed. After a relatively short period time, about 15 seconds, the motor starts to slow down, to a point at after about 30 seconds it no longer turns, but you can feel the motor is still energized. By one minute the motor is not longer even energized and feels dead.
My assumption:
This cap can keep its spec for the time that I mentioned, in seconds, then starts losing its ability to supply the voltage to keep the motor going. As the voltage fades, the motor slows, and eventually not enough voltage is supplied to even excite it.
I poked around the capacitor, and, the 50/60hz switch, and cannot find anything over microvoltages with my DMM, so I suspect its the capacitor, as its the only thing of any kind of electronics in the power supply line.
The motor is rated at 90v->120vac, and 50/60hz
The deck is from 1964, as is this cap. Its a Shizuki RMP, with four taps on it.
Any help is appreciated. I do not even know what to call this capacitor, as its so different from what I know of as standard caps. So I cannot even look for replacements, as I do not know what its called.
silver can - Shizuki RMP ("P" is obscured by the flash):
smaller cap, piggy backing on larger silver can:
motor mount and electronics:
The white wire that is cut-off, between the motor and mount plate, leads to the 50/60hz switch
thanks for hearing me out!