How to remove relay board from KitchenAid KHMS2050SSS microwave

Its possible it may need a rest or something biut see this video:





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OMG NOT KITCHENAID!!!!! Problem is going to be with main control board. The Big Problems is 2 things actually 1 its Kitchenaid. It is going to be expensive to repair. and 2, trying to find a company that actually has the part. If you have the book that came with the unit, see if it has a phone number for warranty service for the unit. It may not be under warranty, but they will be the only ones who will have reasonable access to parts for it. I tell people NO when they call me and say they have a kitchenaid. Just too damn difficult to deal with. GOOD LUCK!!

behind door their is trim round the door use flat knife go between the trim will pop out and open 2 sc

my microwave did not have a fuse. are you sure it is not a switch?

Most likely it's an electronic failure of the main circuit board. Although extremely unlikely, I have seen an oven or two that have had these symptoms that were caused by an insect walking on the back of the circuit board.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0

Unplug, remove top, look under keypad, follow wires to circuit board, look for a silver rectangular capacitor, "may be under a plastic flap" discharge capacitor with a screwdriver across the 2 points, look for a small fuse near by in clips, remove and replace with same current rating, assemble before test because lethal voltages present when powered.

That model should be KHMS2050SS0, KHMS2050SS1, or KHMS2050SS2, I think.

We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid with a one year guarantee.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This can often also affect the exhaust fan, cooling fan, turntable, and/or inside light operation, too.

Details of our service are at our Web site.

Feel free to contact me directly with your brand, full model number and symptoms for more information.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

The microwave sounds like it has keypad control problem, behind the pad is the micro-controller board which controls vital areas of the oven, it needs to be checked out.

F2.Q1 Not reading keypad
inputs
1. Unplug microwave oven or disconnect power.
2. Replace the user interface board (UIB).
3. Replace the door control assembly.
4. Replace all parts and panels before operating.
5. Plug in microwave oven or reconnect power.

Many of the error codes may be solved by power cycling: unplug microwave oven or
disconnect power. After one minute, plug in microwave oven or reconnect power.

i found this info on a tech sheet hope this helps, let me know how it goes... some of those electronics had 5 year parts warranty i would check that out....Also u might be better of buying a new one if its out of warranrty as some of those boards are expensive, obvioulsy unplug unit first try to reset it self.

Assuming yours is a model KHMS2050SSS0, here is what the technical sheet says about the F7 error code:

1. Unplug microwave oven or disconnect power.
2. After 40 seconds, check to see whether this solves the problem.
3. Unplug microwave oven or disconnect power.
4. Check cooling fan operation
5. Check the magnetron.
6. Check P65 connection on the relay control board.
7. Check the P56/P66 connection between relay board and relay control board.
8. Check wiring to the 1200W inverter and control system. See “Checking Inverters.”
9. Check operation of all interlock switches.
10. Replace all parts and panels before operating.
11. Plug in microwave oven or reconnect power.
12. Check voltage at 4903-1 on relay board. If it is 120, unplug microwave oven or disconnect power.
13. Replace inverter.
14. Replace all parts and panels before operating.
15. Plug in microwave oven or reconnect power.
16. If problem persists, unplug microwave oven or disconnect power.
17. Replace relay control board.
18. Replace all parts and panels before operating.
19. Plug in microwave oven or reconnect power.
20. If problem persists, unplug microwave oven or disconnect power.
21. Check for reversed plug connection on controls or loose wiring.
22. Replace all parts and panels before operating.
23. Plug in microwave oven or reconnect power.

(This troubleshooting guide presumes one does not know how to test electronic components. That's why they say to replace and part and check it again.)

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

If yours is a different model number, please reply back.