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Microwave GE Model JVM1660SB 002 Serieal MV919380S

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Posted: Tue Apr 3rd, 2007 11:51 pm

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1^st Post

jfleming
Senior Apprentice Appliantologist

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Hello

I have been trouble shooting this GE microwave for about 5 hours and I have become stumpt. So I have decided to take a look for a good forum and here I am.

The problem that I am having is the the microwave never gets hot. Everything functions from the key baord to the turn table to the lights ect. So one would say that you either have a bad cap, bad magnatron, or a bad transformer. So the smart grasshopper that I am I have check each component out as far as checking for resistance on the cap, transfromer taps, filiament, magnatron and 120 on the low side of the transformer. All the readings came out as expected per the test sheets I was looking at. So I am really stumpted with where to go next.

So I lean on the experts out there to give me some insite or direction as I dont want to go and by all kinds of parts and was a ton of money guessing

thanks in advance

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Posted: Wed Apr 4th, 2007 12:53 am

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AccApp
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Very likely the HV diode and mag tube have failed as a team. Should be a ten-year warr on the mag tube. The last few GE/Samsung's I did came with a mag tube kit comprising of a mag tube, HV diode and a different spinner. Spend another five hours on the phone and GE might give you a Mag Tube or Kit under warranty but tell you the warr is void if installed by a non-authorized servicer.

____________________
"When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth." Sir Arthur Conan Doyle.

http://www.fixitnow.com/beerfund.htm

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Posted: Wed Apr 4th, 2007 10:25 am

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3^rd Post

jfleming
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AccApp wrote: Very likely the HV diode and mag tube have failed as a team. Should be a ten-year warr on the mag tube. The last few GE/Samsung's I did came with a mag tube kit comprising of a mag tube, HV diode and a different spinner. Spend another five hours on the phone and GE might give you a Mag Tube or Kit under warranty but tell you the warr is void if installed by a non-authorized servicer.

Is there a method of checking these items? This is my first microwave......Where/what is the mag tube ( I assume this is the Magnatron unit) and where is the HV diode located? Is there any method of testing these items?

Last edited on Wed Apr 4th, 2007 11:01 am by jfleming

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Posted: Wed Apr 4th, 2007 01:08 pm

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jfleming
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AccApp wrote: Very likely the HV diode and mag tube have failed as a team. Should be a ten-year warr on the mag tube. The last few GE/Samsung's I did came with a mag tube kit comprising of a mag tube, HV diode and a different spinner. Spend another five hours on the phone and GE might give you a Mag Tube or Kit under warranty but tell you the warr is void if installed by a non-authorized servicer.
Wow you were so correct on the 5hr on the phone with GE bouncing around from department to department and person to person. However I do have a good number for escalation department at GE that I would like to share 1-888-239-6832 in hopes to save the next person some trouble. Moral of the story the parts are being shipped out to me free of charge......Thanks for the great tip.

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Posted: Wed Apr 4th, 2007 05:08 pm

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5^th Post

jfleming
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One other question I had.....After running the unit, then I disconnected all connections and also went to discharge the cap....However I never got a discharge.......Is that a indication of anything? I would assume that after just running it and a few minutes later going for the discharge there should be something in the cap.

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Posted: Thu Apr 5th, 2007 06:06 am

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6^th Post

Budget Appliance Repair
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It's been a long time since I've worked on microwaves, but If I remember correctly no charging of the capacitor would be a shorted diode so capacitor doesn't charge or the transformer bad, so it has no hi-voltage to charge the capacitor. Also a possiblity of a shorted magtube or shorted capacitor.

Last edited on Thu Apr 5th, 2007 06:07 am by Budget Appliance Repair

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William Burk (Willie)
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Eureka, CA 95501

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Posted: Thu Apr 5th, 2007 10:31 am

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7^th Post

AccApp
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It is not an easy job to replace the mag tube. I have been able to do it without removing the unit by bending the part of the case just behind the cap after removing it. You also first take off the bottom panel and remove the four screws that retain the transformer as the mag tube will not clear the trans for removal. The rest is pretty straightforward, ask us if you need help. The cap has an internal resistor as I have been told so it will bleed off it's charge without any help.

____________________
"When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth." Sir Arthur Conan Doyle.

http://www.fixitnow.com/beerfund.htm

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Posted: Thu Apr 5th, 2007 12:20 pm

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8^th Post

jfleming
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AccApp wrote: It is not an easy job to replace the mag tube. I have been able to do it without removing the unit by bending the part of the case just behind the cap after removing it. You also first take off the bottom panel and remove the four screws that retain the transformer as the mag tube will not clear the trans for removal. The rest is pretty straightforward, ask us if you need help. The cap has an internal resistor as I have been told so it will bleed off it's charge without any help.

Thanks for the follow up. Once I receive the parts I will update the progess and hopefully success......

thanks again

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Posted: Sun Apr 8th, 2007 12:52 pm

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9^th Post

jfleming
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AccApp wrote: It is not an easy job to replace the mag tube. I have been able to do it without removing the unit by bending the part of the case just behind the cap after removing it. You also first take off the bottom panel and remove the four screws that retain the transformer as the mag tube will not clear the trans for removal. The rest is pretty straightforward, ask us if you need help. The cap has an internal resistor as I have been told so it will bleed off it's charge without any help.

So my parts came in......What is the little spinner thing a mabob that came with the magnatron and HV diode??

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Posted: Sun Apr 8th, 2007 02:00 pm

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10^th Post

KurtiusInterupptus

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this is the stirrer. if you look in the top of the heating compartment you will see a round plastic cover. remove pin and rotate to access and change the stirrer blade. good luck!

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As every cockroach knows , thriving on poisons is the secret of success.

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Posted: Sun Apr 8th, 2007 02:02 pm

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11^th Post

jfleming
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KurtiusInterupptus wrote: this is the stirrer. if you look in the top of the heating compartment you will see a round plastic cover. remove pin and rotate to access and change the stirrer blade. good luck!

Is this accessed from the inside of the micro wave or do I have to take the cover off and access this from the top after removing the cover?

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Posted: Sun Apr 8th, 2007 02:15 pm

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12^th Post

KurtiusInterupptus

Joined:	Fri Jan 12th, 2007
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yes, from inside the microwave.

____________________
As every cockroach knows , thriving on poisons is the secret of success.

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Posted: Sun Apr 8th, 2007 02:50 pm

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13^th Post

jfleming
Senior Apprentice Appliantologist

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KurtiusInterupptus wrote: sorry for the multiple posts- server problems- yes, from inside the microwave.

All

Thanks for the great assistance you have provided. I have successfully fixed my microwave for a measley $5 that it cost me to join the site. I received the parts for free under the 10 year warranty that one of the members tiped me off to. However it did take quit a few hours on the phone to convince GE to send me the parts and a few hours of my own time trouble shoot.......All in all it was a great learning experience and I enjoyed the help from the members

thanks again

Justin

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