Whirlpool gt 4175sps-2 lights and counter turns on but no motor sound or heat

its the high tension fuse .9 size its long

Hi and welcome to FixYa, I am Kelly,

The turntable motor is supposed to run anytime the unit is heating. If it is not turning the turn table motor most likely has failed. It is located on the very bottom of the unit.
See this diagram item 7:
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5512685&diagram_id=28123343#d28123343
Also check the spline on item 6 of the above link.
The motor has a 2 wire connection and 2 mounting screws.
I think the motor has most likely failed.
Thanks for choosing FixYa,
Kelly

MAGNATRON FUSE ... IT LOCATED IN A PLASTIC HOLDER . TAKE COVER OFF. TURN ELECTRIC OFF TOO IT CAN KILL YOU.:)

yes for sure magnetron or diode has gone bad.but usually it is the mag.magnetron when go bad they start making noise and stop heating.when chaging magnetron chg the diode with it.

Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


Benjamin

Test the high voltage capacitor, the rectifier diode.or the magnetron.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts.

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

7r66

Replace it. I work in sales for Whirlpool. It sounds like the door switch is either sticking or shorted. Also because your turntable continues to run it sounds like a short. Microwaves are a unit we only recommend an authorized technician to work on due to the microwaves it uses.

The cost of a new one is usually easily half or more the cost of repairing it.

Average service call just to give you an estimate is 80-90$

Sounds like the magnetron has failed. It is the magnetron that generates the microwaves that heat the food. If it or the circuit that powers it fails then it stops heating. There are some high voltage circuits that feed the magnetron and you can potentially get hurt if you don't know what you are doing. Would recommend you have it serviced by a professional if you want it fixed, otherwise look for a new one since the cost of repair can come close to the price of a new microwave oven.

The only thing i can suggest it to tap it lightly with the handle of the screw driver to see if maybe it is cross threaded. some are hard to get off.. so maybe try using one of those jar opener pads to get a better grip to turn it.