Question about General Electric Microwave Ovens

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The replacement GE WB27X10910 transformer I purchased has the connector lug pattern in the reverse order when looking at it with the base of the unit to the left...wide lug to the left and two narrow lugs to the right on the original, and just the opposite on the replacement...two narrow to the left and wide to the right. Do I just reverse the position of the connectors since the double connector only fits one way and the remaining narrow lug would be for the remaining single wire connector. Trans part numbers are both SHV-U1870C

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Thinking the the different connector sizes denotes positive and negative terminals so put the right size connectors on the terminals

Posted on May 09, 2017

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All is normal just does not heat on any setting


Hi and welcome to FixYa, I am Kelly

Often it is a simple part replacement. There are 3 parts that can usually cause this. The most common failure is the power diode. You remove the chassis to gain access and then make sure you hold a screwdriver and ground the large capacitor at least 3 times across the terminals. Then you can check the diode by using an ohm meter across the terminals. It should read continuity in one direction only. (reverse lead polarity) If it reads in both directions OR there is no continuity then the diode has failed. Next you test the high voltage capacitor by reversing the leads and watching each time for a jump in resistance then the meter returns to infinity. (Diode must be disconnected) No jump in resistance after reversing the test leads or constant resistance = bad capacitor. Lastly the Magnetron could have failed. You read resistance of the leads of the Magnetron with one lead disconnected. You must read resistance. No resistance = bad magnetron
These are the 3 most common failures.


There is a very very remote possibility that the high voltage transformer has failed but the instances of a failed transformer are maybe 1 in 300.

When you open it up look for any signs of burned or hot wires / contacts then perform the tests in the first paragraph above.

You should be able to breathe life back into your microwave by troubleshooting. One thing to note is you can walk into a LOCAL Appliance parts supply with failed part in hand and purchase GENERIC parts to save yourself loads of money. The diode lists for over $50.00 and I know for a fact you can buy a non-GE one for less than half that at a local Appliance Parts source.

Thanks for choosing FixYa,
Kelly

Jan 05, 2011 | GE JE1160 Microwave Oven

2 Answers

Ge md# 3670


if you are familiar with Micro oven servicing follow these steps

.Repairing a microwave oven is a dangerous task. The high-voltage potential combined with the high-current capability of an operating microwave oven pose a deadly threat to a careless worker
1.Shorted Magnetron tube.
2.Replace Magnetron tube
3.Check Built-in surge protection on printed circuit board has opened. This circuit consists of a fine foil pattern (or filter coil - depending on the model) that acts to fuse the primary side of the low-voltage transformer.
4. Rebuild the surge protection circuit. Replace the varistor
5. Magnetron filament connectors have loosened and, due to resistive heat, the terminal connections have deteriorated and burned off.
6. Repair defective terminals as follows:Either (1) Cut away burned wire, clean the magnetron terminals, and replace the slip-on connectors, or (2) Cut away burned wire and connector(s). Clean terminals to prepare for soldering. Solder filament leads directly to magnetron terminals. Be careful not to apply soldering heat any longer than necessary
7. Check for Weakened fuse clips in the fuse receptacle causing fuse to melt due to resistive heat. Usually indicated by a bead of solder leaching out from either endcap and/or evidence of overheating (or burned spot) at the endcap, fuse clip, or terminal connection

8. Replace amp fuse and receptacle. Generic fuses and fuse holders are available at appliance and electronic part suppliers.
9. Contact service center .. all the best ..thank you

Dec 23, 2007 | GE JVM1640 Microwave Oven

Tip

Microwave Oven will not heat.


When your microwave oven has power, the fan runs, carousel turns, light comes on but the unit does not heat up you have a bad high voltage diode, bad filter capacitor or a bad magnatron in that order. The diode and capacitor do not cost very much. You can get them at www.mcmelectroncs.com or www.repairclinic.com . Replacement would mean removing the unit from under the counter (if not a tabletop unit) and removing the case. Locate the diode and capacitor. They should be near the power section behind the transformer and display. The diode is attached to the chassis on one side with a screw and on the other end with a spade lug to one side of the filter capacitor. The diode is brown and has an arrow on the side. The filter capacitor is a large oval silver can with two spade lug connections on one end. After replacing both parts if the unit will not heat you would need a new magnatron. The part is fairly expensive, but depending on the cost of your unit, it may pay to replace it. You should be able to get the magnatron at www.repairclinic.com . The magnatron replacement is not difficult. About four screws and several wires on spade lugs. Just be concientious or mark everything for correct reassembly. Also make sure the part is correctly installed and all seals are in place. You do not want microwave energy to leak out.

hardrocko

Thanks for using FixYa

on Feb 27, 2010 | Microwave Ovens

1 Answer

Hi, I have a JVM1490 that is dead. I have chased


There should be a "mini-manual" (tech sheet) hidden inside the unit
behind the control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting, testing, and locating components.


91758ea.jpg

It *may* have the part number of the low voltage transformer, possibly on a loose sheet inside the mini manual.

Otherwise, you can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

There should be a part number on the label of low voltage transformer.

The GE part number will be something like WB##x##### and the Samsung number will be something like DE_#######.

The Samsung part number is almost always cheaper.

Feel free to contact me directly if you need more help.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

May 13, 2010 | Microwave Ovens

1 Answer

Stovetop lamp sockets very brittle and are disintegrating.


In effect (given the unit is wired correctly) without insulation on the socket, you have an exposed neutral wire in your oven -- this is certainly not as dangerous as an exposed hot wire, but does present risks. I recommend replacing the light sockets -- you'll sleep and cook a lot better.

Apr 23, 2009 | GE JVM1660 Microwave Oven

1 Answer

LOOKING FOR A UNIVERSAL MICROWAVE TRANSFORMER 230V 1400W


It is hard to find a universal with such a high output , I was able to get the part number for the transformer that goes into the unit you listed.
WB27X10893
should find it online ok , here's where I found it
http://www.partstore.com/GetModel.aspx?MfgName=General+Electric&BrandName=General+Electric&ModelNumber=JVM1640SJ&Page=1&SortBy=price&SortDirection=desc#PartsearchSKUList
Hope this helps.
Phil

Apr 14, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

GE JVM 1443 - Unit makes a deeper noise and will not heat


Hello mrobinert,
The sound you may be hearing could be the filament transformer breaking down or the magnetron tube failing ..they will arc and eventually fail. If you aren't getting any microwave energy ( to heat material in the cooking compartment) then in all probability it is either the transformer, magnetron or high voltage capacitor.. None of which are something you want to repair yourself... My advice is that if the cost to repair exceeds teh cost to replace then just buy a replacement model. If yours is under 1 year old, then you may be able to negotiate and get a replacement from the store where you purchased it.. If it is older than a year, it's probably cost effective to just buy a new model.
Regards,
Rick

Nov 23, 2008 | GE Microwave Ovens

1 Answer

I have a JVM1860SF001 Microwave


drive for the turntable is quite easy to do, as for the transformer people have been killed trying to replace key components and if you seriously have no understanding of electrics and electronics then i'd pay the labour costs (its called high voltage for a reason) even with the oven off therecan be upto 3000v still within the oven and believe me it hurts when it shocks you, also with the transformer faulty it could have caused damage to the diode, mag and capacitor not always but sometimes and these are easier to check when changing hv transformer!!!!!

Oct 27, 2008 | GE JVM1650 1000 Watts Microwave Oven

1 Answer

How do i replace the keypad of GE Profile over the range microwave


We have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

There should also be a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting. It will help you test the keypad with your meter.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

If you'd rather have us fix it for you, we do that for $39.95 plus parts.

DISCONNECTING THE KEYPAD

1. Be sure the oven is disconnected from the power line while you are taking it apart.

2. The keypad connection is the green or blue translucent plastic strip that plugs into a connector near the edge of the board.

3. There are two tiny tabs (one on each side) of the connector that you can gently pull up on to unlock the connector.

4. Then the keypad strip will lift out. Clean both sides of the end of the strip with alcohol-based cleaner if you like, but do not use ammonia-based cleaner. Dry the end of the strip. (A pencil eraser is better and safer).

5. Put the keypad strip back in, making sure both sides are down fully.

6. While holding the strip down, push the connector back down to lock it.

7. Try the keys again with the door closed.

We're happy to help and we appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Apr 20, 2008 | GE JVM1650 1000 Watts Microwave Oven

4 Answers

GE Spacesaver over the range microwave oven


GE Microwave ovens, and Microwave Ovens produced by GE but released under different brand names, have had several power problems for the past 20 years. Because it is so easy to sell parts and charge outrageous rates for repair GE never corrected the problems. They just continued it in the next model. They found that you would most likely purchase a new unit rather than paying $75. for a service charge, and $150. for labor plus parts (if out of warranty period).
Most failures were cold solder connections on the power relay board. These would come completely dis-connected after arcing and burning away the solder. Could be 1 month, could be years, but they knew it would happen. This power relay board feeds 120volts to the LV (low voltage) side of the HV (high voltage) Transformer. No High Voltage,,No cook. Everything seems to run normal, but if you listen carefully you will not hear the low tone from the HV Transformer. Over my thirty years in the business I have re-soldered rather than replace so many I couldn't count.
Next to that, a defective Magnetron.

Jan 05, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

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