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What would cause...

a TT to play perfectly beautifully but, on occasion, emit a loud, constant "hum" through the left channel only? Trouble-shooting suggests that jiggling the tonearm cable lead coming out of the back bottom of the plinth can set off the hum and also disrupt the hum. This is a Rega model RP3 just purchased brand new. Should I insist upon a return or should I wait and see if the problem resolves?
lindisfarne
truman
168 posts
 
I'm sure you've already checked the tonearm wire connections so I'd take
it back asap. You don't want to buy a problem. If you take things back
right away, they'll probably replace it with a new one. If not, you'll
probably have to wait for them to repair it. That's not what you want... to
wait, and even then end up with a repaired turntable.
Post removed 
stringreen's avatar
stringreen
6,516 posts
 
Take Liz's advice
czarivey
5,946 posts
 
Wait. Think of upgrade too. I had older model, but I believe the new one also have motor EMI isolation issue. Overall, I was not impressed of its performance.
tubemaster642
1 posts
 
Everyone seems ready to jump all over the seller without giving things a good look. I would think the first thing to check would be the RCA jack at the pre-amp. Wiggle the plug and see if that makes a difference and also try coating the plug with De-Oxit. Problem may also be a loose pin in the cartridge. Try it in another tonearm. Trouble may well be in the tonearm wiring but I'd check the simple and obvious first.
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