7898XRA Magic Chef Microwave Oven Combo - Instructions

Pull out the range...hardest part.
Remove back panel.
Remove/install switch
PS,
This is second switch I had to replace. Try making them in the United States.

Left oven off. Located sensor in pdf manual. Unscrewed mount, pulled sensor out to access connector. Disconnected old sensor, checked continuity(resistance) on ohms with multimeter. No continuity; connected new sensor, screwed mount back into place, turned on oven and baked cookies to check operation & it worked perfectly.

This range was easy. Only 4 screws under the front panel that allows the panel to come off. No need to pull the range out for back screws.

Replacement part was exact and worked perfect.

Turn off the circuit breaker for the range.

Remove the 4 screws under the front panel, one on each end and one one each side of the display/control panel.

Pull the bottom of the front panel out about 30 degrees and lift off the top.

Once panel is off pull of the dial knob, remove the two screws for the control and swap wires on at a time with the new one.. Reverse the procedure and all is good. You may need to use needle nosed pliers on the spade connectors if they are too tight to pull off by hand.

Everything was straightforward other than the tabs that the screws go through before going into the back of the oven were the wrong size and the predrilled holes were not in the right location. Had to trim the metal tabs and redrill the screw holes.

Ordered the part. when it arrived-quite speedily, I just unpacked it and put the cotton gasket around the glass and screwed it to the proper place in the oven. Very easy.

took out the old dome cover and replaced it with a new one by unscrewing and replaced the new one and a fiberglass gasket. simple.

Took screws out of the back on the side the sensor was on, unplugged it & took out the two screws on the inside of the oven to release the sensor. Put new sensor in place with the two screws & used one of the adapters to plug in the new sensor. Put screws back in the back panel & turned on the oven which unfortunately is still 50 degrees low. Need a new clock with computer which is out of stock & unavailable. I was an electrician for 25 years so didn't experience any problems. It was a cheap thing to try.

I took the broiler pan out of the shipping container and put it in the oven.

Turned off breakers to oven. Removed two screws that held oven in cabinet. Removed oven door by opening slightly and pulling up on door. Pulled oven out 1/3 of way. Took out four screws on top of control panel. Took oven light switch off by unscrewing holding ring. Removed temp knob on right by pulling. Removed start / stop knob same way.Removed glass straight out. Removed four screws that held elecrtonic clock conrtol board. Unpluged three wire plug from right side and the nine wire plug from the left side. Worked board out at and angle. Went backwards to connect and replace board, screws and door.Slid oven back in and tested oven after turning breakers back on, worked like new.

switch off the range. undo the two screws & unplug the two tabs. Replace with new element, connect two tabs, screw back in place. done!
recieved my replacement part the next day after ordering

Ordered element and recieved in two days(yea). Removed back cover from unit. Removed two wire slide on wire clips. Then went inside oven cavity and removed two screws holding element intact. The element slid out. Installed element, re-installed two screws to hold element intact. Attached wire clips back on to element, re-attached back cover. Plugged unit back in and it worked perfectly. Eazy-peezy lemon squeezy.

John
Johnny on the Spot Home Repairs
Fishers, Indiana 317-997-3600

First throw the breaker on the stove. Remove two screws in back of oven then slowly pull out loosen the wire attachements ......got new part in 2 days just as simple reverse the removal directions.,,,I am over 60 female and it was simple.

Spoke to your very helpful staff, who advised me that a likely problem was the oven sensor. I took a chance and ordered the part, which came promptly. Your service video for the part was most helpful in my decision to try the part. Installation was a breeze, but it was the oven controller board that had failed and not the oven sensor. That called for a service professional, who ultimately fixed the problem. Your service though, was excellent and I would highly recommend you to others.

First, the diagram on your website said remove two screws. The diagram looked like they were on the back of the stove on each side. On my stove there were three screws that were visible under the front lip upon opening the oven door. I removed the top, which comes completely off and set it aside. Be careful when removing the top. Don't drag it out, otherwise you'll tear up the asbestos around the other burners. Two people would be better for the inexperienced people. The new elements have been redesigned, so the diagram doesn't fit what you are looking at. Plus, the diagram on paper is looking underneath the element when you are looking down on the top of the element. I removed one wire and put it in the same spot on the new. Turned out it was not the element that was bad. It was a loose wire in the inside of the control panel.

Oven sensor replacement was easy. Thermistor was installed in less than 15 minutes. After installation STILL had "F3" error message. Harness was ok, "Clock" or ECU needed to be replaced. "Computer" is obsolete, no spares available, some companies will rebuilt for $400+. Since the stove was going to the landfill I had nothing to lose by taking the "Clock" apart. It has one chip that is probably the power supply and control chip, another chip is an EEPROM with 128 bytes of storage and the last is a darlington chip that controls the relays. Cleaned up everything that looked like it needed cleaning with alcohol. When I reassembled the unit the pins for the thermistor harness felt loose, so I took it apart, again, and found cold solder joints on all four pins. It must have been there all along but plugging and unplugging the harness finally broke out the solder so I could see it. Soldered the pins back in and now it all works. It's worth a try if you're getting the "F3" message. If the relays on your stove aren't working it would be a good idea to replace the darlington chip. Good luck.