Home » Audio » Source » Lenco L65 hums only when playing
Lenco L65 hums only when playing [message #13249] Mon, 15 January 2007 08:38 Go to next message
Peter is currently offline  Peter
Messages: 17
Registered: May 2009
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I have a Lenco L65 with Stanton 500 cartridge of the old days, and whilst playing, it produces a significant hum. This means it hums while the needle is on the record (or on my finger) AND the motor is switched on.

I've opened it, and everything seemed normal (as far as I could see - the connections inside the arm bearing are impossible to see). When I try to wire the arm with the chassis, nothing changes.

As I could read on Graham Slee's site, there is a tag from my left channel ground connected to the chassis of the cartridge. According to Slee, it could give a hum loop when the arm is well earthed. I didn't remove the tag as it has always been there, probably since my grandpa bought it back in the seventies or sixties.

Please, help!

Thanks

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Re: Lenco L65 hums only when playing [message #13250 is a reply to message #13249] Mon, 15 January 2007 16:51 Go to previous messageGo to next message
hurdy_gurdyman is currently offline  hurdy_gurdyman
Messages: 416
Registered: May 2009
Illuminati (1st Degree)
Just wondering if you have tried the most basic test, which is to reverse the AC power plug in the socket.

Dave

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Re: Lenco L65 hums only when playing [message #13251 is a reply to message #13250] Tue, 16 January 2007 01:28 Go to previous messageGo to next message
Peter is currently offline  Peter
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Registered: May 2009
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I tried, it doesn't change anything...

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Re: Lenco L65 hums only when playing [message #13252 is a reply to message #13251] Tue, 23 January 2007 03:46 Go to previous messageGo to next message
Peter is currently offline  Peter
Messages: 17
Registered: May 2009
Chancellor
If you're interested, you can help me at the colleagues of

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Re: Lenco L65 hums only when playing [message #13253 is a reply to message #13252] Tue, 23 January 2007 10:20 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18683
Registered: January 2001
Illuminati (33rd Degree)

I think most will tell you to check ground and connections. You probably have an open or partially open in one of the signal or ground lines.

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