Some Help on an ongoing issue with my TT.

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Submitted By: timlim27

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Location: Singapore

Joined: Jun 15 2011

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Some Help on an ongoing issue with my TT.

Posted: September 7, 2011 - 11:47pm

Hi all!

I have a problem with my Rega Planar 3 TT fitted with a Rega RB300 arm re-wired with Cardas and fitted with an Ortofon OMB5e (MM) Cartridge.

I am running the TT with an external Pro-Ject Phono Box SE.

I have this audible 5-7Khz noise that lasts for 5-10secs eaach time and it comes and goes even when the table is running or not running, be it if the arm is lowered or not. The noise comes from both channels equally.

I managed to borrow an oscilloscope from a friend and I've managed to isolate the problem to the TT only. I've consulted a professional and he said that it could be environmental problem. As I am staying quite near to a TV Broadcasting Station.

Some ideas on how to solve this problem please?

Thank you.
Tim,
Singapore

Submitted By: dbowker

member

Location: New England

Joined: May 8 2007

Posts:

iPhone?

Posted: September 8, 2011 - 10:06pm

I have found iPhones, Kindles and pretty much any 3G device, when it is downloading/checking for email or other content makes some pretty nasty noises through my amp. Could be going through your phono amp, or just through the regular amp itself.

Submitted By: timlim27

member

Location: Singapore

Joined: Jun 15 2011

Posts:

Well, that's absolutely

Posted: September 9, 2011 - 3:51am

Well, that's absolutely possible. I havent tried that aspect yet. Well, any other ideas? keep it coming.

Submitted By: kager

member

Location: Oklahoma

Joined: Oct 1 2006

Posts:

cables

Posted: September 12, 2011 - 11:45pm

Do the cables your using for your turntable have good shielding???

Submitted By: deckeda

member

Joined: Feb 1 2006

Posts:

Disconnect the cables coming

Posted: September 16, 2011 - 9:26am

Disconnect the cables coming from the Rega to the preamp. If the noise goes away you've discovered the entry point, either the cables or Rega (somehow.) If the noise remains disconnect the cables coming out of the preamp leading to the amp. If the noise then goes away you've discovered the entry point is either THOSE cables or the Pro-Ject, and so on.

Try cables with better shielding, or shorter runs, or add shielding to (namely) the Pro-Ject if you can. Overall, noise will enter at the weakest signal, which usually means the preamp and whatever comes earlier.

Wrap everything in lead. (Well, not really ...) If none of that works move the stereo to another part of the house if you can. Call the TV station and complain, perhaps. It may be that their equipment isn't performing correctly and they don't realize it.

Submitted By: JoeE SP9

senior member

Location: Combat Zone of Phila. PA

Joined: Oct 31 2005

Posts:

tv stations

Posted: September 18, 2011 - 12:04pm

Godd luck with calling a TV station about technical problems. I once called a local Phila. TV station to ask why they hadn't been broadcasting in stereo for the last week. The Chief engineer told me I didn't know what I was talking about. About an hour later their audio was back in stereo.

Submitted By: timlim27

member

Location: Singapore

Joined: Jun 15 2011

Posts:

Call the authorities to get

Posted: September 18, 2011 - 8:46pm

Call the authorities to get them to rectify their problems is always an issue.

That's why it's always my last resort.

Been playing around with the mains this week. Installed the Audioprism Quietline MKIII, laid a dedicated power line for my hifi.

Well, all of them don't work, guess I will have to try to solve the problem using the foil method.

Wrapping everything up like a chrome tank.

Somehow, I still feel it's the power that's causing the problem.

Submitted By: deckeda

member

Joined: Feb 1 2006

Posts:

I didn't see where you tried

Posted: September 26, 2011 - 7:26pm

I didn't see where you tried to narrow it down to TT or to preamplifier or something else.

Then again now you seem to be saying it's "all of it?"