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Re: Numark TTX Turntable
Just so you know, there is no actual 'motor' driving the platter. It's a direct drive unit, so it's made up of various circuits driving the unit.
With that said, anyone of those circuits could have gone bad. The good thing, is that most of the circuits (resistors, IC's, capacitors, diodes, etc), are relatively cheap ($2-10), the bad thing is replacing them, and finding out which ones are faulty. You could usually tell which resistors are burnt or caps are blown, but it's harder to test the IC's without the proper equipment.
This is not a cheap turntable, unless you think $300 is cheap for a turntable. Repair wise, your probably looking at about $80-120 for parts and labor. It's a well build turntable, and I think worth investing in trying to get it repaired. Just make sure you get an estimate before any work is done.
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Sounds like the turntable motor has stopped working.
Replacing the turntable motor.
The motor assembly is fixed to the base
of the oven usually with two screws and access i obtained by removing
the inspection plate directly beneath the motor. It is usally a plug
in synchronus motor that revolves at a few revs per minute but the
plastic cogs in the motors gear box fail and the motor assembly must
be replaced. They are fairly inexpensive and obtainable usually from
a domestic appliance repair shop. If you feel confident,
disconnect it from the mains power, remove anything in the cavity and
turn it upside down if it is a tabletop model, a little more
complicated if it is built in! Remove the inspection plate and
disconnect the motor. Remove the motor and go and get a new one. Re
fit it and put the microwave back in its position. Plug it back in,
with the turntable and plate. Put a cup of water on the plate inside
of the oven and heat for 20 seconds to check the plate goes
round. Hope this helps.
probably the connection of start button is loosen the wire, then maybe you need to replace the wire i think it mabe tilted and some other ways you need to check the motor, the pump belt and the right ways to put your clothes in the drier thankx.
Depends on if it's a belt drive turntable or direct drive.
If a belt one, there will either be a speed adjuster on the top of the motor, or one on a PC Board. And yes apart from setting the speed, it as straightforward as taking the old one out and wiring the new one in.
The direct drive, will also have to be adjusted for speed too.
I don't know the answer, but you have written one of the finest, most comprehensive problem descriptions I have come across. In mechanical scenarios, that is priceless. I'm sure a turntable guru will see it and go, "aw. I know what that is". Good Luck.
It might not have been the belt that failed. Sometimes grease can build up where the turntable platter connects and slow it down. Or try turning the motor drive shaft by hand, if it is stiff see if you can clean it. Look also for obstrutions that might slow down the platter.
Make sure the turntable guide is lined up properly and there is no debris caught in it. Examine the turn table bushing the tray sits on and make sure it is not worn or broken. Make sure the turntable is sitting down in the groove correctly. Lastly it may be the drive motor itself is bad. This is the small motor that turns the carousel. This motor is very difficult to replace and unless you are qualified you should not attempt this repair and leave it to a professional. This motor will cost from $40 to $75 plus the cost of having it replaced. You may want to consider buying a new microwave if this unit is over 5 years old. You could end up spending more to repair this one than a new one costs. Of course you can use it without the carousel.
My older Thomas Pacconi turntable was also turning too slowly. Rather than replacing the belt or needle, I tried using an eye glass repair screwdriver to alter the trimmers inside the motor. But the changes didn't take. Then I tried trimming the power to the motor using the larger trimpot next to the motor with the motor itself set to the 78 rpm setting. But the adjustments to the trimmer didn't get the platter to spin slow enough - it wouldn't play an LP. To get the speed down further I replaced the 1K trimmer with a 10K trimmer I picked up for a buck at Radio Shack and successfully adjusted the turntable down to down to 33 1/3 rpm usage. All that was needed was a soldering iron and a 10K trimpot to get the job done.
Well, does the platter spin at a constant speed (33 or 45 rpm), or does it spin super fast? If it spins at a constant speed, and it just wont stop, replacing that pot should do the trick (VR201 can be purchased HERE). You can attempt to replace it yourself (soldering skills are required), or just buy the part, and have a service tech replace it for you.
If it does not solve the problem, then the issue is with one of the IC's (integrated circuits). This is a more complex diagnosis and repair. But try replacing VR201 first, then taking it from there.