Question about Technics SL-1200 Turntable
HI, I got my Technics SL 1200 hooked up to my Yamaha Receiver and the receiver connected through "Rear Out" to my computer (RCA-to-Miniplug) it sounds flawless. Lately I am getting the classic "HUM" more intensely in the right channel (yes, it's grounded in the back of the receiver Yamaha RX-595, and tried it in many different places). When I ground it, the sound level drops a bit and I get a clear defined hum on the right channel, i tested it with headphones and it's very clear. the sound is similar to the one you get when you just unplug one of the RCA cables. Now when i play a record, and increase the volume a little bit, my subwoofer makes my apartment shake like crazy. I have not had this problem before, until a repair shop thought it was a good idea to replace the RCA cables to a higher quality gold RCA's. The guy said that i didn't have ground before and that he fixed that. Now I have this problem and i don't want these guys to keep putting their hands on this great record player. Please any ideas on what this could be? suggestions or tests i should do?. I've done some basic electronic work in the past, I thought maybe I should replace those RCA for new ones? please help, thank you !!!!!! Martiin
It doesn't really sound like this tech knew what he was doing. He probably connected the ground wire incorrectly. I would also suggest opening up the tonearm base section, and checking to see the work he did. Perhaps he did not solder the RCA leads correctly.
If all is good, then there are only 2 other things which may cause this... 1) Tonearm, 2) Cartridge. You'll have to check those 2 out.
FYI, I work on 1200s for a living, so I know these machines inside out.
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Posted on Jul 12, 2008
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Posted on Jan 02, 2017
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