Microwave sometimes stops working and restarts before time is up

Is it a plastic burning smell? It sounds like the magnetron is overheating. Can you hear the cooling fan running? Is there anything blocking the vents on the unit?

when it does that is power supply. they do that. change power supply and see what happens

The problem is in the keypad control board and usually means it must be replaced to fix the problem, and the part alone is expensive.

This sounds like a keypad problem, sometimes a short developes in the keypad controller causing all kinds of intermittent problems, on the back is the microprocessor circuit board which controls vital areas of the microwave oven. The cost to repair will be high and consideration should given to looking at a replacement.

Mine also does the same thing however I only need to lift the door upwards slightly (after it's closed) and it engages the High Voltage Transformer, thus working as normal.

Once you know that, you can get it to work every time. I beleive the clips on the door don't properly stop latch in correctly and the safety feature keep the microwave from acutally turning truly "ON".

i dont have the product key window xp please send me the key

sometimes the clock resets after unpluging for a short period. when you restart / power up note the time it starts at generally 12:00 miday good luck gbw

It is overheating, but what I need to know does the fan work when microwave is running and at some point the fan cuts off even with the microwave still running? if so it may be that the fan is kicking out and then microwave runs and gets hot.

This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.

On these, it's usually a broken tab on the upper switch holder.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

That sounds like what's happening when you hold the Start pad - maybe you're moving the frame and chassis enough to help it work.

Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

You can probably find exploded views and order parts by entering your model number here at the Sears parts site.

The best place to order Sharp parts is Tritronics.

If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.

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

William E. Miller
[email protected]
http://www.microwavedisplay.com