no heat

ApplianceKitchenAid Microwave

Modelkhms155lss1

Level of DifficultyReally easy

Time to do repair1- 2 hours

Age of Appliance5 - 10 years

Tools Pliers
Nutdriver
Screw drivers

kelvin From san diego, CA

Mar 08, 2011

30 out of 36 people found this instruction helpful

this problem started two months ago when my micro quit heating up, after all the research most agreed it was the magnetron. taking the micowave apart is not to difficult just make sure you bag all the screws accordingly. the high voltage area is on the right hand side behind a panel. caution there is a capacitor that will bite if your not careful, need to short the circuit between the two connectors with an insulated screw driver it will make a small pop or let it sit for awhile and it will discharge by itself. The magnetron worked for two days then quit, after more research i took it apart again and tightened up all the connections. Worked great on the bench but when i got it back up on the cabinet two dayslater kaput again. so again i take it down and replaced the two cheapest parts in the high voltage system, magnetron thermst fix, and h.v diode. benched tested it this time for 3 days cooking anything that i could think of, worked great. its been one week now afer installtion and it is still working.

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Diagrams and Parts List for this repair

Part PhotoPart DescriptionPriceAvailability

THRMST-FIX

Part Number: PS391845

$30.44
In Stock

H.V. Diode (Now subbed to DIODE)

Part Number: PS5136042

$16.94
In Stock