Michael for Model Number gh5176xps-0 My Whirlpool Gold Microwave Model GH5176XPS-0 stopped heating things up. No error messages and everything else seems ok. Main fuse was ok so I replaced the magnetron. Still doesn't work. I put a voltmeter across the 2 wires going to the magnetron and turned on the MW. The voltmeter would show no power then the needle would go up for a second and then back to zero. I am thinking a problem with the inverter since it only seem like there is intermittent power to the magnetron. Am I on the right track and which of the 2 inverters is the likely cause. I am thinking it would have to be the 1100W, bit would like a second opinion. Thanks, Mike
Answer Michael, You are on the correct track and the 1100W inverter would be the correct part to replace for a faulty inverter. To check the inverter. Using an ampmeter to measure the input current of the microwave oven when the power level is set to level 10 at the touch panel. If more than .5A then the 1100w Inverter is most likely ok. If less than .5Amps then there is no input to the 1100W inverter. Check the following: No Ac voltage supply. Check control system assembly PCB and wiring. Also check the 4 connectors on the inverter board for loose wires, bad crimping and signs of overheating. Read More... Answered by AppliancePartsPros.com | Monday, November 11, 2013