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#1
February 5th, 2008, 09:03 AM
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Kenmore microwave power converter cuts in and out
Kenmore spacemaker 2002. Model 66561682101
The power converter is cutting in and out, for about 1 second each, it goes on/off/on/off/on.... If we disconnect power converter from smartboard, then we have an F7 code Sometimes the microwave is working fine, and the power converter is drawing the correct power which is 15 amps Question: What would you guys suspect - power converter or smartboard? 
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#2
February 5th, 2008, 01:34 PM
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Hi,
Might help...a copy: Microwave will not operate (cook). F7 error code appears on the display. Electrical circuit interruption between L1 and Neutral in the microwave inverter circuit. Possible reasons: 1. Check door, hinge and cavity front alignment and adjust as needed. 2. Check the operation of all interlock switches. 3. Check over temperature protector for the magnatron. 4. Check all Cavity Thermostats for closed circuit. 5. Unplug the oven for at least 40 seconds. If this solves the problem A. Check the Cooling Fan for proper operation or blockage B. Check the resistance of the magnetron thermostat. It should be 0 Ohms, replace if necessary. 6. Check that the control cable to the 1100 watt inverter is properly connected to plug P2 on the display PCB & Adjust or Reconnect 7. If interlock switches operate correctly, replace 1100W inverter. 8. If problem persists, replace control assembly. jeff.
__________________
http://www.applianceaid.com/ Appliance Repair Aid http://www.jrappliance.ca JRAppliance
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#3
February 5th, 2008, 03:06 PM
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Thanks for the reply!
I can see now that the F7 we get is the direct result of our disconnecting the 1100w inverter (#6 on that list) So now we know that the F7 code is useless for us. Any guesses which to replace first, given our odd symptoms? Inverter or Control board....
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#4
February 6th, 2008, 04:35 AM
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Checking the inverter may be needed, I have these that may or may not help...
http://appliancehelp.hypermart.net/WLPotr1.pdf http://appliancehelp.hypermart.net/WLPotr2.pdf jeff.
__________________
http://www.applianceaid.com/ Appliance Repair Aid http://www.jrappliance.ca JRAppliance
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#5
February 6th, 2008, 03:55 PM
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Now thats a real tech sheet! I'll look it over tonight and post the results!
Thanks el jefe!
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