Doesn't heat anymore. The noise from the oven is louder than it has been. Unit is 5-years old.Touch pad works fine.

touch pad needs replacing not sure if can replace look online might get lucky

Suspect inverter (power) and or the Magnatron---neither are cheap parts.

The magnetron has failed or the high voltage transformer is the problem, either way! it is very expensive to replace, cheaper to buy new.

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

Basic Microwave Oven TroubleshootingTips

heatman101/../

Check the door safety switch. When they go bad, they oven doesn't know if the door is closed or not. Find them inside on the side opposite the hinge. They go bad because we (read "you and me" open the door with the oven running and that cooks the contacts on these little switches.

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

Microwave Oven Basic Troubleshooting Tips

heatman101
dgh

Hi, this is common in most microwaves. this abnormal noise is coming from a faulty Magnetron. this device is responsible for the heating process and, it is damaged and not heating at all at this point.Simply replace the Magnetron and, this unit will start to heat once more.

if everything works except the heating, it is most likely the mag tube is on its way out.........that is the most common reason for it not too cook.......since the microwave is a GE and it is 3.5 years old, i would say you are better off buying a new microwave, the mag tube starts at around $70.00 and up + the labor it costs too have a service person put it in........around another $60.00

hi,

You may need a new magnetron, contact sharp or the store you got it from; most microwaves have a 3-5 year warranty on the magnetron. If it's not in warranty, find a good appliance repairman, this is a difficult and dangerous repair job.

Since the noise is louder, I would suspect a shorted high voltage rectifier diode or failed magnetron.

That model may have a 5-year warranty on the magnetron.

Your owner's manual and warranty guide can be downloaded here, and on that same page you'll find Customer Service contact info.

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

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