20 Most Recent KitchenAid KHMS147HS Microwave Oven - Page 3 Questions & Answers

Checking and replacing the three microswitches would help.

Hello Jimmy Hester, This could be a GREAT TIME to consider calling in a PROFESSIONAL... They walk in... pull out the wall plug... pull out the PC board... Poke the soldering iron at a BAD (cold solder) joint... BINGO ... all is well. Mishandling a CIRCUIT BOARD could change a minor issue to a MAJOR FAILURE... EASY. There are a couple of REALLY great reasons these appliances say ... "NO USER SERVICEABLE PARTS INSIDE" - Primary: novices & amateurs (where EVERYBODY real actually started) need to be trained to wear STATIC Protection... $6 (for a good one, see below). A simple wrist strap. Electro-STATIC spark you might not even feel is enough to DESTROY any semiconductor Amazon com Rosewill ESD Anti Static Wrist Strap Components RTK 002 Black... Could also be a simple PC Board "re-seat"... if it is done with the POWER ON... the oven gets ruined. You really ought consider adding in the MAKE & MODEL.. You will be rewarded with much better than scary stories... If you do manage to get a wrist band... actually remove POWER... & get that control board (PC) out... Look at the solder side... Check for soot or obvious cracks. Use a really bright light and a jewelers loop. We can guide you with a solder sucker... good iron, soldering wick... goggles... burn proof flooring, clothes and furniture... But as you start adding up all the costs... and the remote chance of success... Would it NOT BE EASIER... to look up a 5 STAR repair shop... (not my normal recommendation) I'm just saying... Soldering is not as EASY as it looks. Carnac the Magnificent IRON Weller W60P3 60Watts 120V Controlled Output Soldering Iron With 3 Wire... Sucker (braided copper wick) https://www.amazon.com/Puraid-CP-2015-Desoldering-Soldering-Accessory/dp/B01MRGSLIS/ref=sr_1_4_s_it?s=hpc&ie=UTF8&qid=1513915911&sr=1-4&keywords=desoldering+tools Vacuum sucker Amazon com Ingdy TM 1pc Solder Sucker Desoldering Pump Tool Removal Vacuum...

With the cover off, disconnect the primary of the power transformer. Now, with a good fuse try again. If the fuse blows again check the three microswitches in the latch assembly. If the fuse doesn't blow than the magnetron or diode are shorted.

the Magnetron has gone (yes it's really called that) that's the part of the microwave that emits radio waves and cooks your food... 30 years ago when this tech (Microwave cooking) was new and expensive it was cheaper to replace that part than buy new... now it's the other way around... at least you still have a working electric convection oven. it's very rare that a Magnetron go bad, so look for an old one of the same model and use that one for parts if it's that loved.

If you're referring to the cavity light, it's possible the bulb is just loose in its socket. The cover has to be removed to access the bulb.

I assume the display is hard to see but otherwise the unit function correctly? I'm going to gear my answer to this issue. If everything on unit functions but just can't see clock and temp. settings, you have a bad display. That's gonna be part #2. I'm not how to upload video but go to youtube and type in Kitchenaid slide in electric control replacement. The top video should give you a good idea on how to change display board out. Good Luck

http://ww2.justanswer.com/uploads/fordguy4u/2010-02-16_183702_A1.jpg i hope this gonna help put like if yes :)

Get rid of it and buy a new one. This sounds like a dangerous item to continue to use. ...

Go to Kitchenaid's web site and see if you can order replacement accessories. If not, try contacting their support group. Usually, if you search for: Make Model replacement parts you will find web sites that carry the item you seek. ..