Cleaned filters replaced same msg
F7 refers to a bad inverter board but some times can be the magnatron the process for testing way to complicated plus it requires special needle point test leads usually just change both since you have to drop unit to change either one pricey usually over 200 for inverter mag ranges 150-250 depending on model maybe cheaper to replace MW
SOURCE: Error Code
F7 problems are usually caused by poor connections. I suggest to unplug the ribbon connector off the control board and cleaned the copper connectors using alcohol or with a pencil eraser. If that does not work the touch pad may be defective.
SOURCE: GE XL1800 1100 Watts Microwave Spacemaker
Yes, it could be the Magnetron. If the unit is out of warranty, you can try to remove the rear cover (make sure unit is unplugged) and see if there is a blown fuse in the section that powers the Magetron. They are not too difficult to replace. MCM Electronics sells them and you can call them with your model and they can find a replacement for you will be able to see how much it will cost.
http://www.mcminone.com/search.asp?keyword=magnetrons
1-800-543-4330
Good Luck,
- Jim
SOURCE: Whirlpool Velos Microwave showing "Error
F7 means that the control panel is not getting feedback from the Switched Mode Power Supply (high-voltage inverter).
This could be due to a problem with the inverter or the control unit / circuit board, but it appears to be the latter in most cases.
We repair microwave control boards for customers nationwide with our guaranteed $39.95 service.
We have full details, plus critical safety, disassembly, and troubleshooting info at our site. You'll find a link to our site in our listing here on FixYa: http://tinyurl.com/yzjozk
There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful.
You may reply back with your brand and model number if you'd like us to look into this further, or feel free to contact me directly if you need more help.
We're happy to help and we appreciate your thoughtful rating of our answer.
William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com
SOURCE: F7 ERROR CODE ON GH6177XPS
This is a known problem with this unit, and whirlpool has put out a Service Flash out on this. The reason this is happening is Electrical circuit interruption between the L1 and Neutral in the microwave invert circuit. This has to be addressed by a Tech.
DrakeTech
SOURCE: whirlpool model number MH7140XFB no longer heats
you either need a new h.v. capacitor or h.v. diode in the magnetron circuitry if you cant hear it cycle when it runs as in a low pitched hummmm when its drawing current to operate the magnetron tube, each part runs about $30 to $45 each,normally its the h.v. capacitor though
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