Question about Sharp R-930AK Convection/Microwave Oven

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The power comes on, the carousel does not turn, and neither microwave or convection works.

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The most common Fault with this model (and all Micrwavw ovens) is the door swithces need to be replaced. Where the door latches (or catches-tabs) go through the frame of the Microwave there are three or more swtches which are activated so that the microwave won't work if the door is open. If any one of these switche is defective the heating part of the microwave will not activate. I would start by checking/replacing the three switches(don't just replace 1 - replace all). Caution working on any Microwave oven since high voltage (lethal) is present even when unplugged - a capacitor should be discharged b4 work begins.
Let me know if this helped or you require further assistance.

Posted on Oct 02, 2009

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Posted on Jan 02, 2017

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

Microwave Oven Basic Troubleshooting Tips

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There are a couple of safety thermostats in the oven to shut down power if something overheats. One is on the magnetron tube (the microwave source), the other is on the cooking cavity. These sometimes go bad. There's also a power line fuse that may have failed, or become loose in its mounting clips. These can be tested with an ohmmeter; they should all measure very close to zero ohms if they're good.

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Microwave servicing is best left to professionals. If you're thinking of keeping this one, take it to a service shop (or call for home service) and get an estimate. Then decide whether to repair or replace.

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It does sound like the Magnetronhas broken down, however it could be other things in the Secondary (High Voltage Side). The High Voltage Side is made up of the Secondary HV side of the High Voltage Transformer, A High Voltage Diode, a High Voltage Capacitor, and the Magnetron. The High Voltage Side is DANGEROUS, and CAUTION should be taken to protect yourself against EXTREME HIGH VOLTAGE. unplug from power and DISCHARGE High Voltage Capaciton to frame GROUND before touching anything!!!!

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at highvoltage section wiring may bae problem, check wiring and connectrors of magnetron and capacitor and transformer.

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