Question about Vestax Pdx2000 Direct Drive Turntable System

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Eratic platter direction and speed changes.

While cuing a record and/or trying to scratch, my platter began acting erratically. It reverses and speed ups and slows down, and generally acts crazy. It seems to have began gradually, but now the issue wont stop.

Any ideas?

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Have you seen this solution (Padster07's), it solved my problem: http://www.fixya.com/support/t477894-vestax_pdx200_platter_keeps_changing

Posted on May 09, 2010

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Posted on Jan 02, 2017

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Califone 1435k This record player from the 70s runs great and came highly recommended but the 33 records we're trying to play are sounding much too fast. Any ideas on how to fix this?


This is an idler wheel drive turntable that uses a small rubber wheel, that when engaged pushes on the motor spindle and also on the rim on the underside of the platter. The spindle on the motor is stepped so as you shift speed the idler wheel moves up or down the spindle and that changes the speed of the platter. It could be the the shifting mechanism is dodgy You can try to loosen it by gently shifting the speed from 78 to 16 and back again. But the idler wheel rubber might be in trouble too.

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Your terminology confuses.

Point 1. Why to you say, "Stuck?" Does it not make sense as a possiblity that the designers sought to prevent rotaton speed from being changed mid playback, especially on, say, an LP (long play) album with different side (stereo instead of 45 monaural) grooving. What would be the imperative of changing record speed in that manner...only one record type will play at a time. If changer, only one type record seriies can be played, all at the same speed.

Point 2. ...about "pitch...wildly out by about +7.

First, what are you meaning by pitch and by + (not -) 7. Since there is, to my knowlege, no record spin criterion known as pitch, are you referring to spin speed; hence to playback sound frequency, whether steady state or variable? If there is no user control of platter rotation speed on your unitn there would be little you can do other than to ensure all parts above and below platter are running smoothly with no drag or interference...possibly even lightening the record load on the platter, if a changer; and making sure records are clean to prevent slippage by washing with water or soap and water and air drying--avoid label. If your turntable is optically speed controlled (by timing marks on platter rim) those are typically adjustable to hasten or slow platter speed and therefore playback frequency pitch to your liking. "Wild variation" could reflect mechanical impedance as indicated above. Also check for record warping by trying known true record playback. Finallly, wild variation could be indicator of platter motor end of life cycle. Start pricing a motor if nothing helps.

I still don't follow the significance of the speculative(?) 7. Please explain if possible.

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a) "dirty" main power switch, comes from sparking when power switch has been used a lot (happens also with some CD/DVD players - makes them loose some power - consequently, focus and/or spindle will not work properly). Try cleaning it up or replacing it (bypassing it will tell you if the switch is really the problem).

b) bad contact on the speed control slider (try moving it while slightly pressing it downwards, see if there is any change, if there is, have it cleaned up or replaced)

c) a problem with electronic speed control, possibly a loose solder connection or a bad capacitor somewhere in the speed control circuitry. If the circuit has fuses in it check if they are all ok. I once had a problem with a turntable that had a fuse "partially" blown (people were using the turntable a lot for "scratching" which overheated the fuse but hadn't blown it out, yet it changed in resistance from zero ohms to a few hundred ohms - the turntable began to **** and the speed was changing).

d) none of the above, it could be something else that i can't think of right now

hope ya get it workin'

regards

3rq8 (Triarcuate)

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