Question about GE Advantium 120 Convection/Microwave Oven

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GE Advantium SCA2000BWW The main fuse blows when microwave button is pushed. Magnatron, hv Cap, transformer have been eliminated. Everthing else works fine (exhaust fan and both halogen lamps). Resistance from L1 and N 23 ohms according to service mannual

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  • uenk1004 Aug 07, 2010

    Lead from transformer have been removed still blows

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If the main fuse blows your pulling too many amps or you have a short which is pretty much the same thing. , replace any wiring to the unit with larger ones. If this helps then the problem is definately in the unit and the part that shorted will need to be replaced. If it doesnt help then the unit is fried.

Posted on Aug 07, 2010

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  • Master
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You most likely have a bad transformer

Posted on Aug 07, 2010

  • Sean Wright
    Sean Wright Aug 07, 2010

    If you have ALL leads from the transformer unhooked, you would get nothing, and the unit would not repond to any button press. The side of the transformer that is still hooked into the circuit is probably overpowering.

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1 Answer

GE Profile Microwave Fuse Keeps Blowing


First of all, be sure your AC line voltage is correct at the outlet, at between 105 and 125VAC. If not, call an electrician.

There should be a technical sheet hidden behind the controller or behind the grille or the oven. It's helpful when troubleshooting. If you don't find yours, e-mail me for a copy.

Next take a look at the fuse holder connections and wire terminal connections on the filter board where the fuse is.

Loose or charred connections can increase heat and resistance, leading to a melted fuse.

Also look at the terminals on the upper door switch, magnetron thermostat, and oven thermostat for the same reasons as above. (You'll probably have to remove the oven from the wall to get to the oven thermostat. Your installation instructions are here.)

It's not likely the trouble, but you can eliminate monitor interlock trouble by disconnecting one wire (probably the black one) from the middle door switch and trying your test again. (Ignore the bottom door switch altogether.)

For more free DIY and other help & advice, feel free to contact me.

William E. Miller, AS-EET
pupista@gmail.com
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Mar 14, 2017 | GE Microwave Ovens

1 Answer

OC, Over current


99% of the time you have over current with a Microwave, it is typically the Magnatron, then the HV transformer, as first suspect. If you plugged the unit directly into the wall outlet it would probably blow a fuse. The Magnatron is the large item that makes the Microwaves.

You are speaking of an Inverter so you probably have the Microwave in an RV. RV Microwaves are typically expensive because they fit in small places and it you may want to have it repaired.

E

Nov 22, 2011 | Microwave Ovens

1 Answer

Microwave activate but will not heat food all light and buttons work but will not heat up


Sorry to read about your problem, I hope this helps you out.

You can many different issue's
  1. Blown fuse in HV transformer primary circuit or HV fuse (if used).
  2. Bad connections (particularly to magnetron filament).
  3. Open thermal protector or thermal fuse.
  4. Open HV capacitor, HV diode, HV transformer, or magnetron filament.
  5. Shorted HV diode, HV capacitor (will blow a fuse), or magnetron.
  6. Damaged protective VDR from filament to chassis (not commonly used).
  7. Defective HV relay (not commonly used).
Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances. Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged. A microwave radiation leakage test must be performed on the unit following any internal component repair.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question's. take the time to rate us.Thanks and good luck

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Jan 04, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

GE spacemaker xl 1800 died while cooking,has power to outlet, no display or lights, won't work at all.


Hi and welcome to FixYa. I am Kelly

When a micrwave quite during use it does have a tendancy to make the user wonder just what happened. There are several components that can cause this symptom.

1. The High Voltage Capacitor
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5227571&diagram_id=22974428#d22974428
(item 49)

2. The diode in the diode cable has failed
(Item 50 in the link above)

3. An open thermostat (Item 110) of above link (there are 2 of them)

4. A failed Magnatron (Item 73) This is pretty rare that a magnatron fails... It is usually something else.

Since you do not have any lights or appearance of power the fuse is probably blown.

http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5227571&diagram_id=22974429#d22974429
(Item 47)

It can also be the duct thermostat item 27 but again this is a rare failure.

Usually what happens is either the HV Cap or the Diode in the Diode wire fails.

IF you even attempt repair... make sure to short across the HV Cap terminals at least 3 times. The first time if the cap is good it will really make a bang and spark.

To test the diode wire... "unhook / disconnect one end of it and use a meter to read it using resistance. One direction it should read. Reverse the leads and it will appear open.

There are a few other things like interlocks, HV transformer and control panel board that can cause this but again the instances of failure are pretty slim.
Replace the 20A fuse in the fuse holder. IF it blows again either the diode or the Cap is most likely the problem

An informational note... IF someone opened the door slowly without pressing pause / stop it can via the door interlock switch blow the fuse.

Hopefully this give you a clue as to what has happened and what to look for as far as repair and expected expenses.

Thanks for choosing FixYa.

Kelly

Jun 27, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Microwave runs but does not heat anything


Look at the diode, magnatron or the HV Transformer
Probaby the HV Transformer

Jun 20, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

GE advantium oven does not microwave


I have had this same problem and have replaced the door switch a couple of times. It is very easy and can be done with out taking the unit off the wall.

Sep 23, 2009 | GE Advantium SCA2000B Microwave Oven

1 Answer

Ge Spacemaker microwave jvm240 wv Micro hood combo.


sounds to me like the magnatron has shorted out. i don't know of a way to test them unless you have some high dollar equipment. a continuity test prob wont tell you anything. what reading did you get on the cap when you tested it?

Jan 05, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

4 Answers

GE Microwave problems after HV capacitor replacement???


The rectifier diode could indeed be bad. But first I would want to know what value (in uF) the old one was and what is the value of the new one? If they're too far off, the difference in the capacitive reactance could throw off the "tuning" of the circuit. The uF value of the capacitor is optimized in relation to the other components used in the system. Of course, you'd also want to be sure your new cap is at or slightly above the working voltage rating of the old one, too.

Jan 04, 2007 | GE JVM2050 Microwave Oven

1 Answer

Unit shuts off (JVM1340WW002) and blows fuses


Generally speaking, if the high voltage capacitor is shorted, the fuse will blow as soon as you hit the START pad. When the HV cap fails, I've never seen one do anything but short. If it's a few seconds or so into cooking, it's usually the high-voltage transformer. There may or may not be a burning smell. The cooling fan often will dissipate the smell. What can happen to the transformer is an expansion of the windings to the point where a couple of hot spots eventually make bare spots which touch, then the short causes the fuse to blow. When it cools, they aren't shorting anymore. It's possible it's the mag or something else, but not too likely. You can (carefully!) disconnect the primary leads from the HV transformer then run the oven, making sure the wires are free and clear. If the fuse blows, the problem is in the low-voltage side. If it doesn't the trouble is in the HV side. If you broke a seal (tamper tag) or left any other evidence that you were inside the microwave, your warranty will be voided. Some parts may be covered, but the labor warranty usually expires sooner. Be careful.

Nov 06, 2006 | GE JVM1440 Microwave Oven

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