My Technic SL-230 only plays out of the right channel, even with a new needle. The problem persisted with a different receiver, and when I switched the cables into my receiver, the right was quiet while the left worked. I also tried replacing the cartridge, but not the entire headshell. Is there a way to fix this?
If you disconect the wires to the cartridge and with deck plugged in to the amp and switched on, you can touch the ends of the wires with your finger. Though there are four wires, only two should produce a buzz, one in the left, one in the right speakers. If you get a buzz in each channel, the rest of the unit is working fine and you have a faulty cartridge or a poor connection to it. If one channel remains dead, then you have a problem in the wires to your amp or an internal fault inside the deck. If internal I suggest you remove the bottom of the turntable and have a look around.
Sounds like the headshell or its wiring to me. If you replaced your own cartridge did you look at the 4 wires?
They function like this:
Red=Right Signal(+)
Green=Right Ground(-)
White=Left Signal(+)
Blue=Left Ground(-)
You mentioned one cable swap that you made where the working channel moved from right to left. That suggests the problem is somewhere inside the TT and you know it's probably not the cartridge.
You could check for continuity between the contacts of the colored wires and their corresponding RCA cable ends with an ohmmeter and prove which one is bad.
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