Speed adjustment potentiometer stuck?

Question

Sony PS-LX300USB

A Sony turntable that can convert the music on records into MP3 files via a USB connection.

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Cr4shMyCar @cr4shmycar

Rep: 14

2

Postado: 11 de nov de 2021

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Speed adjustment potentiometer stuck?

Hey all, I’m trying to adjust the speed on my PS-LX310BT, which has the same speed adjustment mechanism as the LX300USB, and the speed adjustment potentiometer feels like it’s stuck. I can stick a screwdriver into the speed adjustment hole and hit the potentiometer itself, but either it’s stuck or turning it has no effect. I’m not familiar with potentiometers in anything but guitars, so I don’t know what could be going on here.

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Is the turntable rotating? Is the drive belt good?

Just replacing the potentiometer is a possible solution.

11 de nov de 2021 por mike

Yep, turntable's rotating and (as far as I know) the belt is OK. Everything's in perfect working order, except for the fact that it plays a bit fast and I can't adjust it because of this potentiometer issue.

11 de nov de 2021 por Cr4shMyCar

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Cr4shMyCar @cr4shmycar

Rep: 14

2

Postado: 30 de dez de 2021

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Okay, I finally figured it out. After removing the bottom of the turntable to get to the motor, I found that you need a really small screwdriver to actually get all the way into the hole and turn the potentiometer. I’m not sure what the exact size is, though I think a precision screwdriver that’s a few inches long will fit through the bottom of the turntable. I’ve got it all dialed in now, and it works perfectly! Thanks for the video, Mike.

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Is the turntable rotating? Is the drive belt good?

Just replacing the potentiometer is a possible solution. — mike
Yep, turntable's rotating and (as far as I know) the belt is OK. Everything's in perfect working order, except for the fact that it plays a bit fast and I can't adjust it because of this potentiometer issue. — Cr4shMyCar