Top 20 Sharp R-1480 Microwave Oven Questions & Answers

No use on fixing the oven. They cost $150-300 so why bother?

I would guess that the boiling water may not have been the cause ... If you are lucky ... try this first: Unplug or turn the circuit breaker off (if it is a built in unit). Wait an hour and then repower. Odds are that will not clear things up ... but it is easy to try. Probably one of the electronic internals broke. A number of different internal component problems could cause this heating failure in the microwave. It could be the magnetron, the high voltage transformer, the PC board, the diode, and the capacitor. This type of problem will need to be diagnosed and repaired by a service technician. Microwaves are inherently dangerous to service. This type of repair is not something that you want to try to do yourself. Internal capacitors in the microwave can retain a lethal electrical charge even when the microwave is completely unplugged. A microwave radiation leakage test should be performed on the unit using proper testing equipment following any internal component repair.

Check or replace your door switch.

Per http://www.homeportfolio.com/catalog/Product.jhtml?prodId=5258 29 15/16" W x 16 3/8" D x 15 1/4" H

" 1. CHILD LOCK The Child Lock prevents unwanted oven operation such as by small children. The oven can be set so that the control panel is deactivated or locked. To set, touch Custom Help, the number 1 and Start/ Touch On. Should a pad be touched, LOCK . .. ON will appear in the display. To cancel, touch Custom Help and Stop/Clear. " Also, to find manuals........

They is one of the DOOR SWITCH need to replace

Take it to a Discount Appliance or Used Appliance store and have them repair it. There they will have the parts that are used and cheaper to repair than hiring an Appliance Service Technician. Option 2 Take the microwave apart and go to www.searpartsdirect.com and type in your model number and find the broken part and part number. Then order the part through ApplianceZone.com or ApliancePartsPro.com. Later when parts arrive at your door... install theparts yourself and save money!

On a sharp R-1480, they use a solid state IC on the control board to switch the night/work lights on and off. These IC's can burn up and quit working, or short out and not turn the lights off. I replaced several of these boards close to twenty years ago but I never saw one that was anywhere near close to being a fire hazard. I'm sure that these boards are no longer available.....

The Sharp model numbers indicate the cabinet color by the last number in the model number. 0=Black, 1=White and 2= Almond

Take the unit out of the case.Posibly the OEM heat shroud missing.Can always lay a piece of silver insulation sheet on the top before putting back into case.

If you are referring to the beep when you press any function,the beeper on the board may have failed. The two other sounds are :i. there is a fan that comes on when start is pressed and, ii. the other sound is a heavy hum also when start is pressed.This comes from the transformer and maybe the magnetron tube. If you are not getting these sounds then troubleshoot these areas,careful though, the output voltage from the transformer is about 1.5kv

could be a bent or broken pin in the door - its a safty issue since microwaves are harmful when the door are not shut - return the microwave to the store you purchased it from or get a new one

Door switch is bad or a fuse blew out inside the microwave cover housing. Switch is most common.

If your model is Sharp R-1480, see the service manual here.You can order Sharp parts from Encompass here.

Some of your story seems impossible. Closed doors do not cause anything. Aging capacitors can cause fuses to go. They also stabilize the magnetron. My bet is the capacitor blew. I have no idea why the fan doesn't work, once the cabinet is open it will become obvious.

It may be the fuse supplying the magnetron, or the magnetron itself which has failed. Another suspect is the high voltage capacitor in this circuit.Don't try to fix this yourself as the internals of a microwave are dangerous, with high voltages even when unplugged.

test the following steps and fix it.use the VOM God bless you1. No power to outlet (overload or fault in microwave or other appliance). 2. Blown main fuse - likely due to other problems. 3. Open thermal protector or thermal fuse. 4. Defective controller or its power supply. 5. Clock needs to be set before other functions will operate (some models).

Your probably have a defective bottom door switch, or that switch's mount is bad.This is a very common probpem in Sharp-made microwaves.See a help file on door switches here. The full service manual is here.You can order Sharp parts from Encompass here. We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

You may download a copy of the manual from here.

You may download a copy of the manual from here.