Question about Morphy Richards GBD239H9B Microwave Oven

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Morphy Richards Microwave GBD239H9B the light comes on the plate spins but it will not warm up.

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It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.


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.

Posted on Mar 11, 2011


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God bless you

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