Question about GE Spacemaker JVM1640SJ Microwave Oven

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Not turning on has no power - GE Spacemaker JVM1640SJ Microwave Oven

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If the model number is correct, there is a 125V, 20 AMP line fuse inside the microwave. Its usually mounted on a small input line filter board at the point where the power cord enters the back of the unit. You will need to UNPLUG the microwave oven and remove the exterior case to access. The case comes off in various ways depending on manufacture and model. I found this illustration at pcappliancerepair.com based on the model number you listed this question under:


http://pcappliancerepair.com/model-display.php


The line fuse is listed as item 47.

You can usually purchase a box of fuses at a hardware store for just a little more than what the manufacturer charges for a single fuse. 125V, 20AMP Slow Blow fuses are recommended.

If you have any questions, or need additional assistance troubleshooting, please post back and let me know. I hope you find this information helpful.

NOTE: Make sure you take any resistance readings with the microwave UNPLUGGED and the component under test isolated (removed) from the circuit.

Posted on Apr 27, 2010

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Posted on Jan 02, 2017

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Serial number 112Km00462. If overheated and power goes off .....is it safe to use when power comes back on?


The magnetron thermal protector probably shut the oven down. Magnetrons don't like it when their load impedance is too low (empty oven or popcorn) and they get quite warm. Operating an oven empty also shortens the life of the magnetron.

Aug 01, 2016 | In Microwave Ovens

Tip

How to test for Electrical power


<p>Be absolutely certain the power is turned off before you begin. To do this, check the clock, timer and oven light, and examine the heating elements on all settings. If any of these components operate, you have power. If a wiring problem has short-circuited one leg of the circuit you may have 110 volts but not 220. This means the oven light, clock, and some heating elements may operate on low, but not on high. It also means you have power and could get a jolt. A jolt from 220 volts can be fatal, use caution!<br /> <p>Once you are confident the oven has no power it is time to establish if the problem is the house wiring or the oven itself. Check the housebreaker or fuse and then test for power where it enters the oven. If there is a 220-volt wall plug, disconnect the fuse or turn the breaker off, then pull the oven away from the wall and pull the plug. Turn the breaker back on and test the wall outlet. Also check the terminal block, located just inside the back of the unit. This is where the main power cord attaches to the oven circuitry.<br /> <p>If your oven is wired directly into the house, the wiring will be connected to the terminal block. Follow the steps above and while the power is off, locate the three-wire terminal block and inspect it for signs of damage, overheating, or melted terminals. Some installations have 4 wires. The 4th wire is a ground for the cabinet. Ensure all wiring is clear and remember <b>not to touch</b> bare wires or terminals. To check the terminals for power, turn the breaker or fuse on briefly and check the terminal block for power across all three legs. Then remove the power at the breaker fuse.<br /> <p>If the terminal block is receiving power, then the problem is within the oven and you will need to isolate the problem using the wiring diagram, found on the back of the oven in a plastic pouch, or on the back or inside the oven near the broiler.<br /> <p>If the terminal block is not receiving power, your house wiring may be the problem. Should this be the case, you will need to call an electrician.<br /> <p><br /> <p>REMEMBER YOU ARE WORKING WITH 220 VOLTS - USE EXTREME CAUTION!!!<br />

on Jan 04, 2011 | Microwave Ovens

1 Answer

Microwave won't turn on


Hello, welcome to Fixya!

The unit not powering on is an indication that it has a power fault.

First, remove the microwave's power cord from the wall, wait for about 30mins, then plug it back in. It may cool by then and might power on. If it doesn't power on, plug it into another outlet, to make sure there electricity entering into the unit.

If plugging into another power outlet doesn't power it on then the unit is most likely having a power problem.

When electric current comes from the power outlet into the microwave, it goes straight into the power supply board which then circulates the current into the unit. So if the microwave doesn't power on, the first thing is to make sure there is power entering into the machine.

So check the power cord, if it is a 3-pin plug, it must have a fuse in it. check the fuse if it is not blown. if fuse is intact, then power supply board should be checked.

If any machine or electronics device doesn't power on, it means its having a power problem. It might have worked fine in the past, but that's electronics for you. Power surge, irregular power supply, excess power supply, etc can affect the unit thereby not making it to power on.

This microwave must have a power supply board in it where power enters from the mains. A capacitor, fuse, diode, etc may have been defective on the power board and maybe that's why its not making the microwave turn on. There might also be some disconnection or something, inside the unit which is not making it to power on.

To actually find out what's wrong, you need to disassemble the unit with a screw driver and check what's wrong. You will be needing a meter and continuity tester in order to read the components on the power board, once you detect any bad component, you can make necessary replacement at any electronics accessories store within our vicinity.You might also find visible bad component without testing with a meter. This is the only way by which you can detect the problem.

Of course, testing the power board with a meter will require someone that has the ability. So it you can't, then you might be needing the help of a repairman or you can call a friend that has the ability to help you out.

I wish you the best of luck.

Regards.

Jan 04, 2012 | Magic Chef MCD1611 Microwave Oven

1 Answer

Our microwave has power, turns on correctly but doesnt heat


our microwave has power, turns on correctly but doesnt heat. It sounds like it is heating but it don't.

Oct 14, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Amana Microwave bulb I cant seems to access, model # AMV5164ACS??


The owner's manual shows you to to access and change them.

Your exact model is not there, but the similar models (like the BCS suffix) should work just fine.

COOKTOP/NIGHT LIGHT REPLACEMENT

CAUTION

To avoid personal injury or property damage, wear gloves when replacing light bulb.

1. Unplug the oven or turn off power at the main power supply.
2. Remove the bulb cover mounting screws.
3. Replace bulb with 40 watt appliance bulb.
4. Replace bulb cover, and mounting screws.
5. Turn the power back on at the main power supply.

OVEN LIGHT REPLACEMENT

1. Unplug oven or turn off power at the main power supply.
2. Open the door.
3. Remove the vent cover mounting screws. (3 middle screws)
4. Slide the grille to the left, then pull straight out.
5. Remove the charcoal filter, if present.
6. Press and hold the center snap while lifting the tab on the left corner. Remove the cover. Remove
the bulb by turning gently.
7. Replace bulb with a 40 watt appliance bulb.
8. Replace the bulb holder.
9. Replace the grille and 3 screws. Turn the power back on at the main
power supply.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Jun 26, 2009 | GE JVM1650 1000 Watts Microwave Oven

1 Answer

Does not turn on at all it's totally dead


It may be a fuse or, the power supply board. you can check the fuse by removing the cover. the (IN-LINE) fuse is located on the power supply board. check it for continuity. if the fuse is in good condition, replace the power board.

Jun 03, 2009 | GE JVM1631 Microwave Oven

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