The forum discussion centers on identifying and replacing a burnt resistor on the GE Spacemaker XL1800 microwave's PCB, specifically part number WB27X10438. Users shared insights on measuring the resistor's value, with suggestions to use a multimeter for accurate readings. A consensus emerged that the resistor likely failed due to excessive current from another faulty component, and a replacement resistor of 28.7k ohms was successfully soldered in by one user, restoring functionality to the microwave. The discussion highlighted the importance of checking surrounding components, particularly electrolytic capacitors, which are prone to failure.
PREREQUISITESElectronics enthusiasts, appliance repair technicians, and anyone troubleshooting microwave oven issues will benefit from this discussion, particularly those dealing with circuit board repairs and component replacements.
jcy110 said:I just fixed my GE Microwave XL 1800 for $2.95. I purchased the 1/4W, 30k Ohm resistor and a 220uf 50V capacitor. Soldered them in, put the WB27X10438 control
board back into the unit and it works perfectly. The large black power relay is not manufactured anymore so I figured I would replace the capacitor and resistor, if that didn't work I would have to spring 150-160 for a new power control board.
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