Sony PS-LX250H Turntable Logo
Posted on Mar 27, 2009
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

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

The speed adjustment on turntable does not make the speed correct, it is running to fast for a 33 or a 45. A store mentioned making adjustments on the underside of the turntable, with a screwdriver, there are three areas to do this. Which one should I pick? The ''holes'' say SW, L.IN, the other says RET

10 Answers

Anonymous

Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

  • Master 8,546 Answers
  • Posted on Apr 05, 2009
Anonymous
Master
Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

Joined: Apr 02, 2009
Answers
8546
Questions
4
Helped
2767834
Points
24828

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.

  • 2 more comments 
  • Rob Short
    Rob Short Dec 13, 2015

    Use David Dunn’s link to the strobe disc. Don’t use his advice on how to adjust the speed.

    SW stands for Tone arm switch. (Shouldn’t it have thrown a red flag when you couldn’t account for the “w,” Dave?) It controls the point at which the tone arm cuts off the motor for the platter. This is why when folks have been adjusting that screw, their platters don’t stop spinning when the stylus returns to its initial position. Don’t mess with it.

    What you want to adjust is one (or both) of the screws inside the smaller holes that are also on the underside of the unit labeled “33” and “45.” Use a *tiny* screwdriver, and make *very* small adjustments. A little goes a long way.

  • Michael Hawes
    Michael Hawes Sep 09, 2017

    yes, Rob Short is correct and David Dunn is wrong. Don't touch the SW screw or you'll have your turntable running endlessly. Use the tiny screws that are inside the motor, behind little rubber grommets that are inside the holes marked 33 and 45 under the bottom cover

  • Jeremiah Harvey
    Jeremiah Harvey Apr 04, 2022

    Hi Michael & Rob! I didn't scroll down far enough on this discussion and have accidentally set my turntable into an endless spin. ????? I've been trying to remedy it, do you guys have any suggestions? I've adjusted the SW several times and still no solution. Any help would be greatly appreciated. Thanks!

  • Anonymous Apr 04, 2022

    Hi Michael & Rob! I didn't scroll down far enough on this discussion and have accidentally sent my turntable into an endless spin. I've been trying to remedy it, do you guys have any suggestions? I've adjusted the SW several times and still no solution. Any help would be greatly appreciated. Thanks!

×

Rob Short

Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Mayor:

An expert whose answer got voted for 2 times.

  • Contributor 2 Answers
  • Posted on Dec 14, 2015
Rob Short
Contributor
Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Mayor:

An expert whose answer got voted for 2 times.

Joined: Dec 13, 2015
Answers
2
Questions
0
Helped
17226
Points
7

Use David Dunn's link to the strobe disc. Don't use his advice on how to adjust the speed.

SW stands for Tone arm switch. (Shouldn't it have thrown a red flag when you couldn't account for the "w," Dave?) It controls the point at which the tone arm cuts off the motor for the platter. This is why when folks have been adjusting that screw, their platters don't stop spinning when the stylus returns to its initial position. Don't mess with it.

What you want to adjust is one (or both) of the screws inside the smaller holes that are also on the underside of the unit labeled "33" and "45." Use a *tiny* screwdriver, and make *very* small adjustments. A little goes a long way.

Ad

Anonymous

Level 1:

An expert who has achieved level 1.

Corporal:

An expert that has over 10 points.

Mayor:

An expert whose answer got voted for 2 times.

Problem Solver:

An expert who has answered 5 questions.

  • Contributor 5 Answers
  • Posted on Jul 07, 2009
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

Corporal:

An expert that has over 10 points.

Mayor:

An expert whose answer got voted for 2 times.

Problem Solver:

An expert who has answered 5 questions.

Joined: Jul 07, 2009
Answers
5
Questions
0
Helped
20064
Points
12

Mocamom1 and dunnbiker, you are awesome. The info from both of you was helpful and the solution worked! I was having the same problem where the turntable was going slightly faster than it should be (about 35 ¼) and it was driving me crazy that everything was too fast & in the wrong key!

As someone whose extent of their knowledge of fixing things is “always unplug it first and pay attention to how you take it apart so you know how to put it back together”, I have a few trial-and-error things to pass along for anyone who needs to try this solution, though.

  1. If you don’t have the strobe disc to test the speed, use a one-minute timer and count how many times the record label goes around (unscientific, I know, but it works!).

  1. I mistakenly read “the underside of the turntable” in mocamom1’s question and thought “under” the actual turntable. So, no, you don’t have to remove the turntable to get to the screws, you just have to flip over the whole unit and they’re on the bottom. (It never occurred to me that they’d be that easy to get to…so why doesn’t Sony just include this useful info in the owner’s manual???)

  1. The screws are attached to the stylus arm, so you need to hold the stylus arm in its cradle (otherwise the screws won’t be lined up with the holes).

  1. The SW screw takes fine tuning, so turning it one full turn may be too much. I tried this and it fixed the speed, but then the turntable wouldn’t stop turning! My first try to fix THAT problem was to turn the screw back to where it (supposedly) was. That just put it back to the 35 ¼ speed (and it still wouldn’t stop!). After several attempts and turns later, I opened the cabinet. The SW screw is actually attached to a tear-drop shaped piece that just turns around in a circle. The point of the tear-drop moves the connector from the power source to the motor. So I’m guessing at complete connection, the turntable runs at full speed. Adjusting the SW screw a hair will make the connection weaker & will slightly reduce the turntable speed. But adjusting the screw too far will make the point of the tear-drop not touch the connector at all to ever break the connection, so the turntable won’t ever shut off.

After figuring all this out, my turntable now runs at 33 1/3 and shuts off when it’s supposed to. Woo hoo! Bruce Springsteen now sounds like his ‘ol self instead of sounding like he just came off a hit from a helium balloon. Thanks again, mocamom1 and dunnbiker, and thanks for saving me a $100 trip to the repair shop!

  • joj joj Oct 23, 2010

    I took my turntable apart to find the 'teardrop shaped' screw you were talking about (the "SW" screw) and also found that when you turn it, it causes two little flexible metal strips to touch and then make the motor work; like you said in a way..

    The SW screw is connected to the needle, so when you move the needle, the screw moves with it, leaving those two metal strips behind, fully connected..and the motor goes at full speed, just as fast as it ever did.

    I used a screwdriver to see if i could make the metal strips connection "weaker" by making them just barely touch, but it didn't really work that way, its either connected (motor on, at the same speed) or disconnected (the motor shuts off completely).

    So I don't understand how this worked for you. The little tear shaped plastic SW screw just turns in circles, it doesn't get any tighter or anything..

    But I'm definitely not an expert and if been messing with the motor in kind of weird ways, which actually made it go faster than it started out with. But even with that said, I still dont understand how it worked, because the only interaction between the SW screw and the motor is when the needle is in its stationary position.

  • Rob Short
    Rob Short Dec 14, 2015

    That screw adjusts where the switch that starts/stops the turntable motor engages relative to the tone arm’s position. Just set it to where the motor stops when the tone arm is in the “stop” position.

×

Anonymous

Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

  • Contributor 1 Answer
  • Posted on Mar 08, 2013
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Joined: Mar 08, 2013
Answers
1
Questions
1
Helped
17171
Points
1

I tried adjusting the SW screw as explained at the beginning of this thread. That did not change the pitch. Further down, I read about the '33' screw, and was able to adjust that to my liking. (You push your tiny flat-head screwdriver very gently through the rubber, let it settle into the screw, and then make a SMALL counter-clockwise turn, like one quarter, if your problem is that the motor was going too fast.)

However, these experiments have left me with a new problem: Now the turntable motor will never shut off. Even when the stylus arm is fully retracted, it keeps going. How do I fix that?

  • 1 more comment 
  • Anonymous Apr 12, 2013

    unplug it... =)

  • Scott Sandler
    Scott Sandler Jan 11, 2015

    Ever figure this out?

  • Rob Short
    Rob Short Dec 14, 2015

    Return the tone arm to the “stop” position. Then turn the SW screw slowly until the motor stops again.

×

Anonymous

Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

  • Contributor 1 Answer
  • Posted on Jun 19, 2010
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Joined: Jun 19, 2010
Answers
1
Questions
0
Helped
17171
Points
2

I tried to adjust it and it must have messed up the connection like vinylfan said, the motor wont shut off. then i took off the bottom (again, i did before reading this) and tried checking out how the connection works. i adjusted it in a hand full of different ways with the connection fully touching and bearly touching at all and i cant get the motor to stop still.

  • 1 more comment 
  • Sean1981 Nov 20, 2010

    I had the same problem with the same record player, and I found out that adjusting the SW screw does nothing for adjusting the speed. You have to have a very small flat head screwdriver and adjust the motor itself, which is incredibly simple.

    First, you need a very small flathead screwdriver.
    Second, look on the bottom of the record player and locate two holes, one labeled 33 and the other 45.
    If your record player runs fast on 33's like mine did, turn the screw a very small amount counter-clockwise to slow the motor, then check your speed.
    If your record player runs slow, turn the screw a very small amount clockwise, then check your speed.

    This will solve your problem.

  • eldrichgeld Jul 04, 2011

    My turn table doesn't have any screws in those two holes. There are just two little rubber spots. I tried to turn them with a screwdriver, hoping a screw was underneath, but nothing happened.

  • Anonymous Jul 13, 2013

    The screw holes only line up when the arm is in place. Unfortunately, even though this explanation sounds plausible and even logical it is ineffective.

×

Matt

Level 1:

An expert who has achieved level 1.

  • Contributor 1 Answer
  • Posted on Aug 26, 2023
Matt
Contributor
Level 1:

An expert who has achieved level 1.

Joined: Aug 26, 2023
Answers
1
Questions
0
Helped
17171
Points
4

As Rob Short says above, to save yourself headaches LEAVE THE "L.IN," "RET," AND "SW" DIALS ALONE! These do NOT adjust the speed, but rather where the armature must be to drop and raise the needle, and turn off the motor, respectively. Speed adjustment is done using the holes that say "33" and "45" on the bottom of the turntable. Turn them very slowly, as they will adjust quickly.

Anonymous

Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

  • Contributor 1 Answer
  • Posted on Mar 15, 2013
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Joined: Mar 15, 2013
Answers
1
Questions
0
Helped
17171
Points
1

Thanks for all of the insight on this turntable! Hopefully setting your SW screw will return the turntable to disengage the switch control for the arm.

  • Scott Sandler
    Scott Sandler Jan 11, 2015

    Where should the SW screw be positioned?

×

Anonymous

Level 1:

An expert who has achieved level 1.

  • Contributor 1 Answer
  • Posted on Aug 03, 2009
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

Joined: Aug 03, 2009
Answers
1
Questions
0
Helped
17171
Points
1

I tried this turning the screw several times and with the strobe disc and the speed is fast all the time the same one.
So shoul i opend the cabinet? o What

Anonymous

Level 1:

An expert who has achieved level 1.

Mayor:

An expert whose answer got voted for 2 times.

  • Contributor 1 Answer
  • Posted on Jun 10, 2009
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

Mayor:

An expert whose answer got voted for 2 times.

Joined: Jun 10, 2009
Answers
1
Questions
0
Helped
17171
Points
2

Take off the metal cover and make sure that the amp switch is turned on.

  • Anonymous Jun 10, 2009

    woops accidentally replied to the wrong post

×

Anonymous

Level 1:

An expert who has achieved level 1.

  • Contributor 1 Answer
  • Posted on Jun 27, 2009
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

Joined: Jun 27, 2009
Answers
1
Questions
1
Helped
17171
Points
3

Dunnbiker needs to realize that no one who owns this turn table has ever thought about printing their own "strobe disc". I'm actually amazed that dunnbiker has looked up from the latest Star Trek episode to try and answer this question. I think I'm going to have a "strobe disc" party and invite the wookies and ewaks to listen to my turn table that is playing too slow. Maybe they'll know wtf a "strobe disc" is.

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
1answer

How do I adjust the speed of a Sony LX250H turntable? The answer is not in my manual.

Presumably you mean correcting the speed to play 45 and 33 correctly?
Some turntables have the speed control(s) as a preset(s) built into the base on the underside of the unit. Often covered with a sticker. You simply remove the sticker and stick a small screwdriver in the thing and turn it.
Others have the preset inside on a circuit board, got to by removing the bottom of the turntable. Others have it built into the motor itself.
You should replace the belt first if the speed is slow on both 45 and 33, before adjusting the motor speed.
0helpful
1answer

The speed control switch does not affect the play speed of the turntable. It only turns at 45 RPM (switch open.)

It's likely the belt has come off the correct position. It would need to be adjusted. One reason it's moved is that it needs replacing, because it's too slack.
0helpful
1answer

My Sony PS-LX250H Turntable suddenly started playing records too fast for both 33 and 45 speeds. Any ideas on how to fix???

If this is a belt drive then most of these speed increases are caused by the belt being in the wrong position. The belt could be faulty and my need to be replaced. Otherwise it could be due to a power supply problem, such as a faulty regulator to the supply of the motor. A check on the voltage to the motor will determine this. Assuming you know what the correct voltage should be! Of course with luck it will be higher than the motor is supposed to run at.
3helpful
1answer

My audio technica turntable is playing records too fast. how do i fix this?

there are two small holes under the unit labeled 33 and 45 that control speed. im guessing youre mainly playing lps so use a flathead jewlers screw to adjust the 33 setting until you get the right speed
0helpful
1answer

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.
1helpful
1answer

My Sony PS-LX250H is all of the sudden playing too slow with a 33

Not sure what made it happen all of a sudden, but you might want to check out Mocamom1 's question related to PS-LX250H speed & the attached solutions. You may just need to adjust the SW screw on the underside of the unit (worked for mine that was playing everything at 35 1/4!)
0helpful
1answer

Put a brand new drive belt on my sony PS-LX250H and the sound

If the belt is installed correctly (around the center ring on the underside of the metal platter & around the motor post), try adjusting the SW screw on the underside of the unit that apparently fine-tune adjusts speed. It fixed the speed on my turntable - more info/instructions on it are posted under Mocamom1's question & solutions regarding PS-LX250H speed adjustment.
0helpful
2answers

Sony pslx250h

Did the problem exist on its own uncorrelated to anything you may have done?

Does it return and cycle itself off or is it just rebounding aimlessly?

Unfortunately, there are no user adjustments for tracking, antiskate, end-of-play-return, etc. The only recommendation from the manual is to make sure the turntable is level and the records are clean and unscratched.

0helpful
1answer

Sony ps-lx250h belt-driven turntable runs too fast.

Is there an adjustment knob? if so use that! if not it will have to be adjusted from under the turntable!
this should fix ya!
9helpful
2answers

Sony PS-LX250H speed problem

I have a different Sony model (PS-LX-150H) that had a similar problem. I hadn't used it in awhile, and then when I did, I noticed the speed problem.

IF your PS-LX250 is like my PS-LX150, there are small speed adjustment screws accessible from the bottom of the unit. On mine, the two adjustment screws were labeled - one for 33rpm, the other for 45 rpm. Basically I just fiddled a bit with them using a very small precision screw driver until I could verify that I had reached 33 rpm (I used a stopwatch and literally counted the number of rotations/minute after making adjustments.)

Now it sounds right!
Not finding what you are looking for?

17,181 views

Ask a Question

Usually answered in minutes!

Top Sony Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5755 Answers

John
John

Level 2 Expert

510 Answers

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Are you a Sony Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...