Question about Microwave Ovens
Sharp Quartz Chef combination microwave R-7E53 blows fuse on hitting microwave start button. Display, light, turntable etc. all work but no heat. Please can someone help?
If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.
Here is a helpful link you or someone you know can use for test help, but read their safety warnings first:
Info on ordering Sharp UK parts / spares is here.
The best place to order Sharp parts in the US is Tritronics.
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Posted on Aug 18, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
Nov 19, 2016 | Magic Chef MCD1611ST Microwave Oven
It sounds like the magnetron may have
either failed or is not being supplied with the extremely high
voltage required to run it.
SAFETY IS PARAMOUNT
This is a job for a professional but if
you are safety clued up, here's instruction.
Make sure the !!!!any capacitors are discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 or moving coil meter on high resistance range for short circuit, (DVM's won't show the fault!), the capacitor can fail and go short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.
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