Completely dead; has good power source and fuse ok

First try plugging it in a different power outlet to eliminate a possible defective AC outlet, than if it still does not work, your friend could be correct it could be a fuse, if you have electrical skills you can verify your self. first unplug the power cable, than unscrew the cover to get to the electronic board, locate all the ceramic fuses and with a good multimeter set to (Ohms) check the continuity of all fuses if it reads 0 ohms it's good if it reads nothing than it is bad, replace that fuse with the same amperage and type than put the cover of the oven back, plug the power cable and give it a test if the fuse burns again than the problem is much worse, it could be a defective safety switch on the door frame or a defective circuit board, take it to a good repair shop...

REMEMBER TO ALWAYS UNPLUG THE POWER CABLE BEFORE OPENING THE UNIT!!!

Hope this helps!

There is a fuse under the cover, as well as a couple of safety thermostats that can cause a dead oven. It may also be that the power transformer for the control circuit board has failed. I've seen several Sharp ovens where the transformer died because of power surges. This would cause no display and no functions even though the oven has power. Also, did you make sure the outlet your oven is plugged into has power? If it's a GFI outlet it may need to be reset, or a circuit breaker in your electric service panel may have tripped.

Hope this helps, and thanks for using Fixya!

Your unit is dead, mains are good, tried in other receptacles, still no power. You have a bad fuse inside the unit. Unplug. Remove the cover. Generally this requires removing all the screws on the back perimeter and lifting the cover up. Sometimes they stick due to old grease, etc. Somewhere in the area of where the power cord comes in or near the transformer there should be a small fuse in a holder. It is not a glass fuse and should be replaced with the same kind (ceramic) and value. This is important for future protection. You can get the fuse at www.mcmelectronics.com . Get a box of five for future problems. If this was the only problem your microwave should work. If it blows the new fuse you could have a shorted power transformer, bad high voltage diode, or a bad magnatron in that order. There could also be a short in the board with the display but that would be unusual. Let me know if you need anymore helpl

hardrocko

Thanks for using FixYa

You will need to remove the top grill vent first, then you can remove the screws coming in from the top of the grille vent then that will expose a screw holding down the control panel at the top. Remove the screw and remove the control panel. The fuse is located in a little 1" fuse holder just behind the front panel near the top.

There is a high voltage fuse in the unit attatched to the high voltage capacitor, it is the most common problem for microwaves not working. Also check the protective diode,the high voltage capacitor as well as the transformer if the fuse is ok. Good Luck.

Purchased a new microwave.

Go to any hard ware store for fuse or Home depot. If still dead it could be a bad magnetron, power supply or logic board. Home Improvement Made Easy with New Lower Prices Improve Repair

i had same problen, i changed the fuse inside the microwave, works good now

Does the digital display light up at all? Is it completely dead? Are you sure it has power? Have you tried another outlet? If the outlet is good and the unit is completely dead, the internal fuse may have blown. You can try to take the cover off (with the unit unplugged) and look for a blown fuse. Try replacing the fuse with an EXACT fuse of the same rating. Try plugging the unit back in again and see if the unit comes back on. If not, you may have a power supply issue or defective Magnetron.

Please let me know what you find and we'll go from there.

Good Luck,
- Jim

there is a fuse in the top right hand of the microwave it will burn out when the Capacitor goes bad it will burn it out replace the Capacitor diod and fuse