I recently took my turntable out of the box after being in there for years because someone wanted to buy it, but it dose not work.

There will be yes! But if it is as simple as replacing it, I would doubt.

There's a service manual for the model on e-bay at the moment!
If you get stuck.
http://www.ebay.co.uk/itm/JVC-QL-F320-QL-F320B-turntable-service-manual-original-/131584946151

Here is a copy paste from Numark's Quick start owner manual page 3:
3. Voltage Selector:
This switches the internal voltage transformer between 115V, 230V and 240V. The turntable should be shipped with the proper voltage setting for your region. Check that the switch is in the proper voltage before connecting the power cord to prevent damage to the turntable.
At page 2 also there is a diagram showing the exact place for that switch.
So I can't believe that this turntable is stricted for use under 115V. Also, as far as I know from my experience (23 years Electronics Engineer), the only thing that coulg be before the transformer is either the voltage selector switch, or some kind of ac filter. The only case that I'm not sure, is the case that you powered up the turntable at a 230V area and the Numark's voltage selector was set at 115V. In that case the transformer should be burned and the service should replace it and charge you the cost for that.
I think that there is something strange at your case. Why don't you check at another service center at your area?

In case of a problem or clarification, don't hesitate to post me a reply.
If you are satisfied, rate my solution with the "thumbs" or add a testimonial.

Thanks and regards
Please kindly rate this solution
Stelios
direct FixYa link: http://www.fixya.com/users/technical114

My Belling BEL-CJ/SS25 Microwave / oven / grill has recently developed a problem. Every time I close the door the turntable starts rotating, even when I'm not using it. It doesn't make a noise, and doesn't seem to be going into any cooking setting, and the light doesn't come on, but it turns until I open the door, when the light comes on and the turntable stops turning. This has only recently started happening, and nothing else seems to be wrong with it, Is this safe or should I get rid of it and buy a new one. The guarantee has expired so repair may be cost prohibitive.

If it still in perfect running condition, An audiophile of LPs should be interested in buying it. I sold my 30 year old Technics SL-1300 mkII for $250

most likely it's a 120vac motor. Get the bottom off and look for where power comes in somewhere on or around the base of the tonearm will be an actuator switch. unplugged, set the meter for ohms and operate the switch by moving the tone arm. You may have to use clip leads to get a free hand. The switch should read 0 ohms when the tonearm is moved. If not, you've got a bad switch.
While you are in there look around for anything that may have come loose or unplugged. Also, with it plugged in you should read somewhere between 110-120Volts ac between neutral and the motor side of the switch, when actuated. BE CAREFUL 110v can be lethal, or at the very least cause an unpleasant experience. Good luck

It might be the moter , through it in the bathtub and see if yousee sparks.

Yes, that large metal box is the housing for the transformer. Not too hard to replace, but if not done properly can cause serious damage to your turntable.

I've never heard of a transformer on these units causing a buzzing noise. Did you buy this used or new? If it's new, it's highly unlikely that the issue is with the transformer. However, we have been seeing some 'unusual' issues with Technics 1200s lately, which we attribute to a decline in quality standards @ Matsushita (Technics parent company).

The transformer can be purchased HERE. There really isn't much to replacing this part, just put it back exactly as you took it apart. Take pictures along the way, to help you if you get stuck. Also take some notes on where each part goes.

If you get stuck along the way, feel free to give us a call. Our service techs are masters with the 1200s, and we can walk you through it: 1.866.668.1596 ext 1

- DJ PRO LAB
www.DJPROLAB.com

locate the diagram and check you monitor switch it is one of your door switches

If you just purchased and Installed the microwave, I would call Sears and tell them what is happening, generally, it would still be under warranty if less than a year old. If its a countertop model, you may have to take it in, otherwise they should come to the home for the repair. I would also NOT indicate that you have looked at it as that would void your warranty.
Otherwise, it seems like the problem could be, a) touchpad , b) a relay or c) the main control board

I have a Memorex MVD2023 DVD Player which I've had less than a year, and have the same problem - suddenly no power. The Standby/Power On indicator light is off. Any solution or just buy a new machine?