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I know, there are a ton of posts on this already, however I have little idea what other "hums" actually sound like. And there are so many suggestions, it is a bit confusing to follow.
Just a plain TD160. Older AT cartridge but still looks fine under scope and otherwise sounds good.
Symptom: Has a hum, as usual, I tap the cartridge-I know, sounds bad and could be but it is a very lite touch and it takes the hum down 70%, but it is still there. Periodically, every hour or two of play, repeat.
How loud: at it's highest too loud to play an lp. At 9:00 volume with nothing playing it is too loud. When I tap it, I would have to turn the volume up rather higher to match the previous louder hum.
Tried and changed nothing: Disconnected-Lubed carefully cartridge connections. Moved power lines. inner connects etc. Tried two preamps, a cheap black face (kenwood?) and a Pioneer c-21 plus a MAC 4100 receiver. Hum does not change at all.
Tried and helped, but not 100%: Couple days ago after seeing another thread here, I tried to rearrange/separate the 4 wires at the connection to cart. from each other-- This helped tremendously. But no telling for how long.
But hum is still there, but not at 9:00. I have to turn up to 1:00 and then it is still not as prominent as it used to be at 9:00. I never turn past 11.5 when listening in my smaller room anyway.
Must be something in wires or cart, and I think from playing with the it that the sound I am hearing is motor induced, (a slight sound change from 33 to Off.) It almost sounds like tube induced hum, but I use SS.
So can I rid this table of this hum for good? Even the now slight hum?
Thanks----
Follow Ups:
I had a TD165 with the original Thorens arm and had hum caused by the headshell, I eventually replaced it at some expense and the hum was gone.
There are ways to repair the connections, resolder the leads and use deoxit as suggested. Another option if you plan on keeping the turntable is to replace the arm with a Rega. I had a TD160 with a custom plinth and a Rega RB300 arm, excellent turntable.
Thomas
Is the hum in one channel only or is it in both channels? If rearranging the cartridge wires reduced the hum, my guess is you have a broken wire -- maybe more than one broken wire. Or, perhaps you have dirty contacts.
You say you lubed the contacts. Perhaps they are still dirty. You might want to buy some Caig products for cleaning and enhancing electrical connections. I use Caig DeoxIT Gold on all my connections. It really works.
Good luck,
John Elison
Thank you both. I think you nailed it with the broken wires. Last night I experimented some more and concluded I should rewire the arm when I add a new cartridge. I used Caig DeOxit.
Cheers
Edits: 05/22/16 05/22/16
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