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Whirlpool Microwave GH9185XLQ-0


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8 replies to this topic

#1 AAAble Mike

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Posted 06 July 2011 - 05:20 PM

Hi all, this Whirlpool Microwave GH9185XLQ-0 starts running, after 1-2 seconds stops running and repeats, after 5-10 seconds smoke appears. I think the smoke is from the board powering the Magnetron, as I can't determine the exact source due to the fan running. By the way, the fan cycles on and off with everything else.
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#2 RegUS_PatOff

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Posted 06 July 2011 - 06:38 PM

Whirlpool Microwave GH9185XLQ-0

Whirlpool GH9185XLQ0 Inverter MicroWave made by Panasonic
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#3 AAAble Mike

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Posted 07 July 2011 - 05:36 AM

The inverter board is the likely culprit then? This box has given 10yrs of service. I take from your reply that this will be money thrown away should we choose to replace the inverter board?
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#4 RegUS_PatOff

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Posted 07 July 2011 - 06:14 AM

The inverter board is the likely culprit then?

... and / or the Control Board, etc . . .
Hard to diagnose those types of circuits unless you have an oscilloscope, etc ...
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#5 Samurai Appliance Repair Man

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Posted 07 July 2011 - 06:35 AM

Can always shotgun it and try replacing the perverter board. If it doesn't fix it, return it for a refund!

#6 AAAble Mike

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Posted 08 July 2011 - 06:23 AM

The shotgun has been fired! Thanks for the idea. Great policy too!
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#7 appl.tech.29501

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Posted 08 July 2011 - 07:19 AM

I can't determine the exact source due to the fan running. .



Just disconnect the power to the fan...no more air ;)
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#8 AAAble Mike

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Posted 17 July 2011 - 02:51 PM

Sooooooo, the new inverter board is installed and........code f7 is now present. A quick check of the temperature sensor mounted to the magnetron resulted in a zero ohm reading, good as I have read on other threads. Saw a small (3/8") green disc shaped capacitor on the old inverter was the source of the smoke. My take is that the magnetron likely damaged the inverter board. Any other angles of attack? Am I even close to the ball park?
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#9 RegUS_PatOff

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Posted 17 July 2011 - 04:42 PM

from the tech sheets: (do you need it?)

F7 Power to magnetron interrupted
1. Unplug microwave oven or disconnect power.
2. After 40 seconds, check to see whether this solves the problem.
(Possible reason: Over temperature protection for the magnetron opened.)
3. Check resistance of the magnetron thermostat. It should be close to 0 ohms.
4. Check the magnetron.
5. Check wiring to the 1100W inverter and control system.
6. Check operation of all interlock switches.
7. If switches operate correctly:
 Replace 1100W inverter.
 If problem persists, replace electronic control. :mellow:
8. Plug in microwave oven or reconnect power.
.

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