B38HA-5TVW Magic Chef Wall Oven - Instructions

I switched the oven sensor easily enough, but it did not remedy the problem, so we are in the process of replacing the oven since it's about 20 yrs. old.

Unplugged the range, removed screws holding the old sensor. When I pulled it out, the wire connecting to the sensor was completely broken through,therefore I could not just pull the wire to get to the connector. Unscrewed one side of back panel to access the connector. Pushed the connector and wire of the new sensor through the hole ( and behind the insulation), disconnected the old sensor and connected the new one. Re screwed the new connector in place plus rescrewed the back panel. Plugged the range in and - Viola! Everything now works like a charm and I have my oven back. Easy-Peasy. Oh - I am an older female with very limited DYI experience. I just saved myself $650.00!

Removed the two screws holding the sensor to the rear oven wall. pulled out sensor wire. It was caught on other wires behind the oven. removed the three screws holding the 8" inspection plate in the center of the rear panel. Carefully move the insulation and reach in to grasp the back end of the sensor wire. Once free from the snag it easily pulls out with the sensor just as stated in the video. using the appropriate adaptor it was easy to re-asseble and and attach to the oven wall. Replace the rear panel with the three screws and it was done

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 "Computer" is obsolete, no spares available, some companies will rebuilt for $400+.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.

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.

I installed the new oven sensor but the problem continued. So I ordered a new relay board and installed it. Still no luck. So I pulled the new board back out and started trouble shooting it using my electronic background. I discovered the new board was using a pin for L2 that had no exit on the backplane, so I removed it and installed it where I believed it should go. Reinstalled the power relay board and presto. My oven is working lie a champ. Louis

After trying to set the bake temp after the self cleaning, it would not heat up. I Googled the model number,selected your link because it mentioned my symptom,and said usually it is the temp sensor in the oven that gets damaged by the high self cleaning heat. Your site had a place to enter my model number. You provided a great exploded view of the parts, showing me my sensor,then you provided the part number of the kit i needed,and filled out the order form with payment method. Less than a week later I got my part with instructions. Your video showed me the two screws I remove from the front ,and I pulled the old part out and uplugged it's connector. Replacement was easy, and oven was fixed! Thank you for a great site! You held my hand through it all!

Flipped off breaker and removed oven door and pulled built in stove out so the back panel could be removed. Unplugged the sensor then removed the two screws securing the old sensor inside the oven and installed new sensor. Put stove back together and installed back into counter top, re-installed oven door, flipped on the breaker and oven works like new.

Replaced the long Oven Sensor but have not resolved the root problem. Oven still will not reach required temperature. Bottom element becomes red hot, but turns off and will not start again.

Had to remove oven from mounting cabinet to get to the back since the wire lenght to the conector was to short to come through the mounting hole.
Other than that the repair was straight forward. 4 screws to dismount the Oven from cabinet, 2 screws to remove Sensor and 3 srews to open the back of the oven once out in the open. New cable adapter that came with the new sensor was needed in my case.

removed the shield and removed the old tube. Replaced with the new tube and replaced the shield. The only place I could locate this tube was through the internet. This Co. had as good a price including shipping that I found.

We actually had to get the repairman back that had repaired our microwave. Our range has the attached microwave above the range. My stovetop light worked prior to the visit. When he left, I prepared supper without the light, which did not go on. Ultimately, we had to replace the fluorscent tube, which thankfully, you had. No appliance store in a 35 mile radius did. We finally got the glass protector off, and the new tube did not go on. Back to the repairman, to tell him the new bulb did not work and that probably something happened when he visited before. He came back, found that indeed a wire had been broken when he was working on the microwave. I had indicated to him I did not expect to pay another repair bill after I had alrealy spent 117. before plus the cost of the new bulb, 22. something including shipping. He obliged and id not charge me anythink to repair the broken wire.
Now I have the old bulb for back up!!!
Thank you for having my replacement tube!!

Very easy to repair, but you have to be able to pull your stove out. Two screws in the oven and then remove part of back cover of oven and one plug from there. Simple to do, but did not fix our problem. We are waiting repair now from service company as it looks like it needs a control panel. Worth trying yourself to fix the problem. Inexpensive part and easy to install. Also be sure to turn power off your oven to reset the control panel as this may fix the problem - try this first and also after installing new part - like rebooting a computer...

Removed the oven from the wall. Removed back cover and unplugged sensor from the harness. Remove and replace sensor from inside the oven. Reconnect harness and reinstall back cover. Secure oven back into the wall.

Removed frame to cabinet lag screws
Slid oven out of cabinet (required because wire harness could not be pulled through inside of oven)
Removed two screws holding attaching sensor inside oven
Uncoupled wire harness
Installed new sensor in reverse order

Unfortunately, neither the new bake element or sensor fixed the problem, so I just ordered the more expensive control board -- hope that does it.