No power While cooking all power went out. No lights or clock on control panel. Input power to microwave checked and is good.

SOURCE: Model 721.80803400 microwave blank control panel

there is a transformer on front pc board.might need tech to have a looksee

SOURCE: Control panel on a whirlpool microwave

SOME ELECTRONIC CONTROLS HAVE A LOCKOUT FEATURE THAT IS ENGAGED AND DISENGEGED BY HOLDING A CERTAIN BUTTON FOR 5 SECONDS. LOOK FOR A LOCK PAD AND HOLD IT FOR 5 SECONDS TILL IT BEEPS.

IF NOT AVAILABLE, THE TOUCH PAD MAY BE UNPLUGGED FROM THE MAIN P.C. BOARD OR MAY BE DEFECTIVE.

ALSO, TRY UNPLUGGING THE MICROWAVE FOR 5 MINUTES
TO RESET THE MICROCOMPUTER, THEN PLUG IT BACK IN AND SEE IF IT WORKS.

AN ELECTRICAL OUTLET NOT WIRED WITH PROPER POLARITY OR NOT GROUNDED CAN AFFECT ELECTRONIC APPLIANCES ALSO.

Scott Jelt

• 44 Answers
• Posted on Nov 09, 2008

SOURCE: JVM1190 wont cook

You have a blown actuator. This is the device that creates the microwaves that cook the food. The cost of one of these will be as much as a new unit.

William Miller

• 9179 Answers
• Posted on Nov 16, 2008

SOURCE: GE SPACEMAKER XL MICROWAVE OVEN JVM1440

Assuming that your internal cooling fan is working, I would suspect that your magnetron is failing.

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

There should also be a "mini-manual" 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.

I would check the cooling fan, then suspect the magnetron.

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

William Miller

• 9179 Answers
• Posted on Dec 25, 2008

SOURCE: Microwave Oven Does Not Start Cooking

This is usually caused by either a bad door switch or a loose door switch mount, which are pretty simple problems to fix.

Even though a door switch clicks, it may still be bad inside.

Door switch or mount trouble is usually 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.

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.

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

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

If you don't find yours, or if you want to look at it without disassembling the oven, you can download it here.

If yours is not shown at the parts site or manual site linked above, Please reply back with your brand and model number so we can help you.

If you only need a switch, you can order a universal type here for $5 postpaid.

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

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