Sunbeam microwave oven turntable turns erratically, makes 3 partial turns to full circle instead of moving easily around. hasn't been run in several years. can i put some wd-40 down the spindle hole?

you will have to decide if is cheaper to fix or replace. Microwaves are inexpensive. find parts and someone to fix it mat be difficult. I would reple it and move on. You can chose from several makers. prices start at $39.00 up to $150.00. look at Walmart, home depot

Hello paula.... there is no switch or other easy way to turn off the turntable. What you can do is simply remove the glass revolving tray and ring and use the microwave with the turntable removed. Joe

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No heat means the magnetron circuit has failed. It is the part that generates the microwaves to heat the food. Usually not worth fixing since the magnetron costs nearly as much as a new oven. To diagnose, if the oven is on, you will hear a loud buzzing sound if the magnetron is shorted.

ths is probably a failed motor they can go open circuit i have had a few where the fixing screws underneath that hold the motor fall out severing the drive spigot ,check if the spigot turns under the glass turntable if hard to turn will be motor failed cheap easy fix.

For assistance with your Sunbeam Microwave, you can call 1-866-257-3336.

The turntable system consists of the motor, the coupler, the turntable support with rollers, and the tray.

You can see and hear a video of how a turntable motor should sound when you rotate it by hand.

If yours won't rotate or it sounds like it's grinding, etc., you may have a bad motor or plastic coupler.

To replace either, you need to unplug power, then remove the bottom cover of the oven.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

get a new microwave its nackered

You may have a tunrtable motor or spindle problem..
This info is from GE website..( link : http://genet.geappliances.com/geasearch/Dispatcher?REQUEST=GETSEARCHRESULT

To minimize the possibility of electric shock, unplug this appliance from the power supply before attempting any maintenance or cleaning.

• Make sure the turntable is centered and seated properly. On models with a stirrer motor there is a shaft protruding up through the floor of the microwave. Make sure the turntable is securely fastened to this shaft. On models that turn on a ring with wheels attached, make sure the turntable is seated securely on the ring.

• Check the turntable to make sure it is placed right side up. If the turntable plate is upside down it will drag on the floor of the microwave.

• Check to make sure that there is no food or debris under the "wheels" of the turntable ring. Food can prevent the wheels from moving forward.

• Be certain you are pressing a cook function rather than a timer function.

• If the microwave has a turntable on/off feature make sure the turntable was not inadvertently turned off. Try depressing the turntable on/off pad to re-engage the turntable.

Sounds like the bottom bearing has siezed. This is then rotating on it's mountings instead of nice ball bearings.

Just check it's not simply any support wheels you can easily get to.
It is possible to access this from inside. If you wish to repair it, unplug, and remove case screws. The drive assembly is easily visable from underneath. If you can get the main bearing off, clean it in parafin or WD40 and use a little light oil on it.

Make sure you replace the case properly - with all screws before attempting to start again.
The microwave generator is only active when electricity is applied, and usually the door assembly is integral to the microwave chamber.

Do not run the microwave with the door open. You will be cooked. Sooner or later, if there are enough microwave ovens, (and there are), everything that can go wrong with them will, eventually. There are several interlocking safety systems built into every microwave so that they won't work with the door open. Yours may have failed. I've never come across one, but that doesn't mean it can't happen.
It may only have a fault making the fan and turntable operate, which can sound like it's working with the door open. Either way, get it checked or get a new one.
This assumes that the microwave isn't actually supposed to do what it is doing under normal conditions or current programming. Refer to manual/instructions if unsure.:::Spiceweasel.au