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Grundig 4400 / Audio Techinca T4P Turntable spins at 35 RPM instead of 33 RPM

I have a Grunding 4400 turntable (I thinks is the same as a Audio Techinca T4P Turntable). It's a little old but all mechanims and pulley are in perfect conditions. It has only one pulley and two speeds 33 and 35. When you set the speed to 33 the records are played a little to fast. I was able to calculate the speed at 35 RPM insted of 33 RPM. Do you know how to fix it? Thanks in advance!

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  • darthemi Jul 28, 2013

    Sorry I meant it has two speed 33 and 45. Not 35. 35 RPM is the speed I was able to calcualte it spins when the switch is on 33 RPM

  •  Grubhead
    Grubhead Jul 30, 2013

    I couldn't see a picture of the turnatable on the net, so I need to ask has it got a light which shines on the edge with black & white dots? Plus a pitch control?

  •  Grubhead
    Grubhead Jul 30, 2013

    If it hasn't try looking underneath the turnatable at the base. To see if it has holes (which might be covered up) these could contain two speed presets one for 45 and one for 33. You should be able to "tweak" the speed using either the previous method (till the dots in the light appear not to move when playing a record). And by a slight adjustment with a screwdriver in the 33 rpm hole, which will have to be done by trial and error.

  • darthemi Jul 30, 2013

    It does not have a pitch control, only two buttons on the right: one for 33 RPM and another for 45 RPM. Here are some pitcures I just pulled out from the web.







  •  Grubhead
    Grubhead Jul 31, 2013

    Then your only option is to look underneath to see if you can see a speed preset. If you are lucky there will be two one for each speed. If there is no sign of them on the bottom, you might have to go inside to find them.

  • darthemi Aug 04, 2013

    Hi Grubhead. I found two tiny screws underneath the the turntable, one to set the adjust speed of the 33 RPM button and the another one the 45 RPM. I'l try to correct the speed with those and let you know how it went. I would never thought to look underneath; thank you very much for help. I'm posting a couple of pictures for reference in case this helps someone else.

  • darthemi Aug 04, 2013

    Hi Grubhead. I found two tiny screws underneath the the turntable, one to set the adjust speed of the 33 RPM button and the another one the 45 RPM. I'l try to correct the speed with those and let you know how it went. I would never thought to look underneath; thank you very much for help. I'm posting a couple of pictures for reference in case this helps someone else.

  • darthemi Aug 04, 2013

    Pictures

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  • Audio Player... Master
  • 5,126 Answers

I think you mean 45 rpm?
It sounds like you have got the belt in the wrong position. Try adjusting the position of the belt by experiment. Or you could look up the correct way to set up the belt.

Posted on Jul 29, 2013

Testimonial: "Hi Grubhead, thanks for your help. I really meant 35 RPM. When I select 33 RPM on the turtable it goes a little faster, but not as much as 45 RPM. Monitoring the time the tracks take to finish and comparing it with the actual time they should take, I was able to estimate the speed at 34.9 RPM instead of 33 RPM. If I switch the speed to 45 RPM is way faster."

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SOURCE: Garrard Type A Turntable Speed settings are off, except the 45RPM

Forget solution #1

Here's what you do:

Your Garrard Type A is most likely an idler-drive deck (With a rubber wheel driving the turntable).

- Under the rubber mat there's a "C" shaped clamp to be found around the spindle. Remove that and keep safe. Now remove the platter and behold the 'guts' of the monster. On the left you should see a thick rubber wheel with a metal core inside, directly under that wheel you'll find a 3 step pulley protruding from under the frame.

Plug in the AC and turn on. Carefully look at the pulley. It should spin fast. If not, immediately unplug the power otherwise you'll burn out the motor. If the pulley spins too slow, the specially inserted factory grease/oil may have "set" or dried out during the silent years..

The same goes for the grease/ oil which is inserted in the spindle-bus. We'll get there later.

- Make sure the AC is OFF! High Voltage Inside!

- Lift the frame from its casing/ plinth and make sure it's completely supported when upside down, so you don't damage the arm!

- Locate the BIG motor! :-)

- The lower bearing screws may be 'glued' on with red lacquer. (Shellac) (This was done to prevent repairs by users (Warranty Expiration)
- Unscrew those and lift off the bearing. (a light tap with a small mallet may break the lacquer and make it easier to unscrew. DON'T TRY to unscrew forcefully as the screws may get damaged! They're made of brass I thought. )
- Clean it out with a tissue or a non-pilling piece of cloth. The Top bearing can be found under the motor-pulley which is fastened with 3 small screws. (Note! This bearing doesn't need greasing 'cause it's only there for support!)

Once cleaned out insert the tiniest little amount of Singer-Oil (Sowing Machine Oil) into the LOWER bearing. and put it back over the motor shaft. Screw the bearing back on. Make sure the screws are not too tight as, once again you may damage the heads. There! You just re-greased your turntable motor!

Next: If the speed selector lever is hard to move. Apply a small dab of vaseline onto the frame right next to the lever. Gently move it to and fro a few times and that's that.

- Spindle Bus:

This is somewhat more risky because this is practically what makes the turntable! The spindle was inserted in the factory by pressure, oil first, spindle second, forcing all the air out, leaving a film of oil around the spindle-shaft..

- Locate the cast-iron spindle-bus. Almost on top there you'll see a screw somewhere (again sealed with the red shellac)

- Gently try to loosen it. AGAIN: Do NOT use excessive force!
After unscrewing keep it safe.

- Turn the upside down frame over again to its normal position.

- Gently try to lift the spindle out of its bus.
DON'T YANK IT as this piece of stainless steel was crafted with extremely high precision! Then again, the vacuum won't let ya, heheh.

- Degrease with a non-pilling cloth or tissue drenched in thinner/ pure alcohol. Use a pencil and non-pilling cloth to clean out and degrease the spindle bus. Never use tissues as these may tear leaving residue in the spindle bus which decreases performance!

- Now poor some Singer-Oil onto the spindle and a small drop in the spindle-bus. Slowly rotate it between your fingers so the oil can distribute itself all over the spindle.

-Put the spindle back in its bus and let it sink in under its own weight (Get some coffee. Watch the Superbowl, Take a vacation, cause this may take a while!) DO NOT force it in as you may damage either the bus or the spindle!

- Make sure the idler wheel is smooth and round! Run your fingers along the inside of the platter to see if there's any residual rubber left behind. If so, you're gonna need a new wheel sometime soon. If not, congrats! Make sure the idler wheel is free from grease, oil dust and dirt and that it runs smooth! Make sure the inside of the platter is also free from dust, dirt, grease or oil to obtain maximum grip or friction.

- Join turntable back together with spindle and give it a soft spin. (Oil warms up inside spindle bus)

Plug in the AC...

Happy spinning at the right speed! :o)


Posted on Apr 04, 2009

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