Author Topic: GE Microwave  (Read 950 times)

Offline dentdaddy

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GE Microwave
« on: December 25, 2012, 07:10:30 PM »
I dont have a model number, but here is the situation: found the unit to have a blown thermal fuse. replaced with a new part, ran it for 15 seconds and new TCO blew out. Where should I look from here? I dont know much about microwaves.


Any help would be appreciated.
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Offline domain

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Re: GE Microwave
« Reply #1 on: December 25, 2012, 08:13:39 PM »
Magnatron/Capacitor/Diode is shorted to ground... :D

Offline Bailey

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Re: GE Microwave
« Reply #2 on: December 25, 2012, 11:23:09 PM »
Fuse or thermal fuse? Most microwaves have two thermal fuses. One on the mag and one on the cavity. Which one opened?

Offline dentdaddy

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Re: GE Microwave
« Reply #3 on: December 26, 2012, 06:32:43 AM »
The one that opened was the cavity. This is a microhood, is it necessary to uninstall these to test/replace mags and transformers? If that's the case, it seems like I can't charge enough to make any money repairing them.
Good work isn't cheap. Cheap work isn't good.
SW Oklahoma

Offline niobrara

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Re: GE Microwave
« Reply #4 on: December 26, 2012, 07:14:04 AM »
Yes you have to open it to test them correctly.

Offline domain

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Re: GE Microwave
« Reply #5 on: December 26, 2012, 08:22:27 AM »
I read too quickly, I read that thinking it was the line fuse. My apologies. It may be pulling too much current if they blow that quickly. I personally eould make sure a fan is running during mag operation! :D   Yes the unit needs to be pulled to accurately diagnose. :D
« Last Edit: December 26, 2012, 08:23:11 AM by domain »

Offline JWWebster

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Re: GE Microwave
« Reply #6 on: December 26, 2012, 08:28:42 AM »
Unplug the mag and run the machine. If it still blows unplug the cap and see if it still blows. I use a reset switch I got off something so I ain't gotta keep replacing fuses.
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Offline dentdaddy

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Re: GE Microwave
« Reply #7 on: December 26, 2012, 08:49:13 AM »
JW, unplug from the board or from where?
Good work isn't cheap. Cheap work isn't good.
SW Oklahoma

Offline JWWebster

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Re: GE Microwave
« Reply #8 on: December 26, 2012, 09:37:30 AM »
You want to be careful and unplug and protect each live wire from shorting to each component. Narrow it down to whichever component is causing the fuse to blow. It mostly gonna be a shorted magnetron, capacitor, or diode Like Domain says. You could just check each component for shorts. Or do it the redneck way and start with disconnecting the mag and running it to see if the fuse still blows and if it does not, disconnect the capacitor and so forth. Don't let any wires touch the frame and don't get bit.  :P
« Last Edit: December 26, 2012, 09:41:12 AM by JWWebster »
May the hinges of our friendship
        never grow rusty.

About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack. The small green square=personal message. The green dot is a link to my web page on appliance repair and other general BS I love to post. The letter sends me email.
I love fan letters! LOL

 

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