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Original Message

Weird damping mechanism- ever seen this?

Posted by mr.bear on July 11, 2017 at 21:54:59:




Anybody ever seen a damping mechanism like this- no piston! The damping on my sweet Sony PS-X50 is gone and I aim to get it back.

The cueing lever is on the front of the table; it moves the cam that actuates the cueing lift-rod. The damping fluid is between the faying surfaces of a bearing that supports the rotating "lifter cam assembly." There is a normal-appearing cylinder holding the cueing rod but it's a fake! - not a piston, just a guide for the rod.

I almost removed the tonearm to gain access to the "fake" damping cylinder cast into the base, a mess considering the automatic stuff, before I saw the sketch. I can take off the e-clip, open the bearing a bit, and add oil with a needle injector, without removing the arm!

Any suggestion as to what kind of damping oil to use? I'll contact the nice folks at Turntable Basics and ask them also. Thanks.