My Sharp microwave oven (R-4850) took a power surge and stopped working. I did the usual microwave oven parts tests (fuse, magnetron, cap, etc.) and finally found a broken Zener Diode on the control board. It may be on the circuit that controls the digital display.
Unfortunately, the markings on the Zener diode are worn off and I have not been able to find a schematic online for this microwave oven. I tested the diode with my Harbor Freight multimeter and it show a forward voltage drop of 765 mV.
What advice do you have on identifying the right diode to put into the circuit?
Thank you very much.
Lou
Unfortunately, the markings on the Zener diode are worn off and I have not been able to find a schematic online for this microwave oven. I tested the diode with my Harbor Freight multimeter and it show a forward voltage drop of 765 mV.
What advice do you have on identifying the right diode to put into the circuit?
Thank you very much.
Lou