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B and O beogram 1700

Works perfectly on 45 speed..... will not Turn / 33 speed....It will pause... I was wondering if I can change the face plate out of a 2402 and servo motor / control panel will it work? or whats my problem

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Problem might be the 33 switch. If it's gone bad, it will cause this kind of problem. The issue is not the motor. Possibly one of the capacitors or resistors might have gone bad. Not easy to determine without the proper tools and a service manual.

- Davis
DJ Pro Audio
www.djproaudio.com
www.repairnyc.com

Posted on Aug 02, 2008

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What is required is the need to remove the TOP plate and look to see the drive of the motor. If there is slipping of the drive it can result in higher speed. If so it can be aligned and corrected.

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Thomas Pacconi Model TPC-MSE-800 turntable runs slugglish. 78 runs fine but 45 or 33 runs slow. I removed belt cleaned it and platter. I put a drop on oil still same problem. Do I need a new belt? This is...


Pjam,
Had the same problem & checked around on the net. Several people tried replacing the belt, but it had no effect. Spoke w/ several repair shops around the country and they concur with what I'd read on the net - bad motors. 3 or 4 repair/supply shops told me getting a motor would be impossible. Since I only listen to 33-1/3 LP's, I messed around w/ it a little and found a solution. Take the turntable out of the unit & you will find a small circuit board attached to the bottom. On that board is a small square blue fixture w/ a white circular "dial" in the middle (has grooves to accept a small straight blade or a phillips screw driver). This controls the voltage to the motor, which in turn controls the motor RPM's. If you set the selector switch to 78, you can experiment /w turning that white circular "dial" to slow the motor down. It isn't very hard to get the speed set properly. The down side is that you will only be able to play 33-1/3 LP's, but they are probably the most common anyways. I assume you could do the same to set the speed for a 45, rather than a 33-1/3. Down side is that you will only be able to play 1 size LP on the 78 speed setting, but it's an easy adjustment that can keep an otherwise in-op turntable functioning. Good luck!

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My turntable speed is too slow. I have the optimus lab 1000 and there are speed adjustments on the bottom side of the unit but turning these either for 45 or 33 rpm did not change results. I have already...


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The speed on my JVC L-A11 is too fast when set to 33. If I toggle in between 33 and 45 it slows down enough so the pitch and speed sound right. How do I fix this so I can keep it set to 33 rather than...


HELLO

There a few things which can cause this problem. First the speed change switch may be faulty or contaminated by dirt/dust. If I were looking at this deck I would spray some Servisol switch cleaner into the switch (you may have to remove the base of the deck to do it).

There should also be two variable pots which are used to set each speed - spray those as well - it may be a "dead spot" on the pot itself. These are the most obvious causes but if the problem still persists check the belt. If that is OK, then you may have a fault in the speed control circuit.

ALL THE BEST WITH IT (:-)

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I don't know if this model is direct driven or by belt. If it's belt driven then the belt could be fitted incorrectly, or faulty. Another possibilty is that there's a fault in the motor control circuit.

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HELLO
I have just posted a cure for this deck, it is to do with the microswitches under the speed select buttons - they need to be replaced. Just repaired mine today - now there are no more problems selecting speeds.
If the speed goes back to 33 when the deck is switched off, this is because 33 is the default.
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You have drive issues. There is no easy way to fix or to isolate the problem. You'll have to take it to a service technician who can test your unit, and fix the problem. Usually it's one of the 3 main IC (integrated circuits) which cause this problem.

- OPTiC.
Digital Analog Therapy
www.djprolab.com
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