Cannot adjust speed on a vintage Technics SL-B30 Turntable

1 If it's a belt turntable - the belt slips off.
2 A power supply problem.
3 A faulty motor.

It could be a worn drive belt. Lift the platter oof the machine and check your belt. It may need to be replaced

You will need to check your belt for wear. Lift felt on platter and check belt tension. It may need replacing. To replace, simply lift platter section of the unit, taking note of the belt position. replace and your problem will be solved

Instructions on installation of your drive belt - this also applies to other brands as well - however this belt is only for the Technics models listed above:

1. Remove the turntable platter off from the turntable
2. Remove the old/damage belt
3. Wrap the new belt underneath the turntable platter - you will see a small lip on the bottom of the platter. Wrap the belt around this lip.
4. Put the platter back on the turntable
5. The turntable platter will have small holes, rotate the platter until you see the motor, and the motor shaft.
6. Pinch the belt, so that it wraps around the motor shaft
7. Turn on and enjoy!

- OPTiC

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The belt goes underneath the turntable platter. First you attach to the lip on the bottom of the turntable platter, then you put the platter on the turntable. You'll see some holes on the platter, after you put it on, just rotate the platter, until you see the motor shaft, then pinch the belt around the motor shaft.

- OPTiC
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the platter must be able to spin freely without a belt installed as shown in this video

http://www.archive.org/details/Turntable_Belt_Installation

that would be one likely cause presuming you have the correct new belt that is.

Howdy Ivy:

An Adobe PDF format service manual for the Technics SL-23 turntable can be downloaded from

http://www.servicemanuals.net/

for about $16.

Good luck!
Paul H.

The Technics SL-BD22 is a belt driven turntable. It is most likely possible that the belt wore off, wore down, or could have spun off. The platter should have 2 holes in it. One of them should alow you to see, and replace the belt. YOu can lift the platter off the turntable via those two holes. MAKE SURE IT IS TURNED OFF AND UNPLUGGED......

You can find a replacement @

http://1200s.com/Store/PARTS-TECHNICS-TURNTABLES-Drive_Belts/c271_272_278_398/index.html

And the part should come with instructions. Those guys are very thorough.

Keep me posted.

Try http://www.vintage-electronics.net/ttbelt.html

There is no drive belt on this unit. This is a direct drive turntable. Your pitch control might be on it's way out. Are you getting any sort of unusual speed issues? Or is it just sort of running slower than usual? There is a pot you can adjust under the turntable platter to speed it up a bit, however, this is only a temporary fix. It is listed as VR301 - and is on the main board under the turntable platter - it says PITCH on it. Try adjusting that pot, to see if it does anything. WORD OF CAUTION: Make sure your turntable platter is ALWAYS on whenever you power up your turntable, and if you do any electrical modifications, make sure you always disconnect your turntable from it's power source to be on the safe side. If this does not work, then either your pitch control (which is a variable resistor) will need to be replaced. The problem could also be one of the drive components on the main board, however, this will need to be worked on by a service tech. Hope this helps. - Justin