Question about Sony PS-LX250H Turntable

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The turntable runs great for half the way throw the lp and then it speeds up to a 45 speed

I don't use the turntable that much and I thought it might be the belt when it get warm and maybe smaller?

Posted by nippy20 on

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1 Answer

John Fink

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Any infinitesimal change in belt temperature would not cause such a change in speed. The speed of your turntable is governed by an electronic circuit and this is where the trouble is.

The cost of a repair is going to be mostly labor which may exceed the value of the value of the turntable.

Posted on Mar 16, 2015

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5 Related Answers

Anonymous

  • 515 Answers

SOURCE: Speed

The motor for the unit might be dying out. There really aren't any other factors that control the speed/rpm of these belt driven models. So if the belt didn't do the trick, you will have to take it to a service center to test the motor.

Posted on Sep 23, 2007

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ctf1800

Cary Farah

  • 4402 Answers

SOURCE: Turntable speed

most of these were belt driven, if that the case check to see if the lever is connected moving the belt to the slower pully

Posted on Jan 04, 2008

dunnbiker

David Dunn

  • 8546 Answers

SOURCE: Sony PS-LX250H turntable speed adjustment on underside, how??

Great detective work.

Let's collaborate on this for the benefit of others who may have the same problem.

L.IN should be the point at which the Lead-In groove on the LP would be, where the tonearm will drop to play an LP
RET should be the point at which the tonearm will lift up and RETurn to its rest at the end of the LP

That leaves us with SW. If your source is right this will affect the Speed. I can't imagine what the W stands for.

Since this turntable lacks the traditional strobe light and dots along the platter rim for determining if it's on target speed-wise we have to improvise and make a Strobe Disc.

It has radial marks on it and you place it on the turntable like a record. The lights in your room running at 60hz will make it appear to be stationary if the speed is correct; slowly creeping CW if too fast; CCW if too slow.

Here's a link to a PDF from which you can print your own disc... http://www.extremephono.com/ftp/60Hz.PDF

Here's what you do. Lay the trimmed Strobe Disc on top of a record while it's playing one of the outer tracks. This is because the stylus imparts some drag so we want to factor it in.

Then adjust the screw exactly one turn Clockwise and note how the speed has changed. Trial and error should get you to where you want to be.

Posted on Apr 05, 2009

Grubhead

Grubhead

  • 5700 Answers

SOURCE: Sony Belt Drive Turntable Platen speed

Check for grease on the platter or anywhere in the mechanism. Sometimes somebody has messed around with the speed preset, there might be two. You could try adjusting them. Sometimes they are found on the underside of the turntable, covered up, or they will be on the PC board of the deck.

Posted on Jan 26, 2010

Grubhead

Grubhead

  • 5700 Answers

SOURCE: How do I manually adjust

Without technical equipment it would be near impossible to get the speed down to the level of a CD. A lot depends on the belt, how much it has been used, for example a new belt might help! The motor of the deck could have a speed setting on it, but even so it would be on the bottom of the deck and you would have to adjust while you were under the turntable. Like being under a car!
Some have speed presets, again under the deck, often covered with a label. Others will have them on the PC board of the deck's power supply section.
On the whole that's one of the flaws with records and decks, they are not as good as CD's.

Posted on Dec 09, 2010

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mailto:[email protected]

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