Question about Sharp R-1490 Microwave Oven
A microwave can be dead for many reasons.
If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder.
If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.
If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.
If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.
If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Feb 27, 2008
The HV capacitor or the HV diode may be in short, check these parts, discharge the capacitor before touching anything.
Maybe something is shorted to ground.
Posted on Feb 17, 2008
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Posted on Jan 02, 2017
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