Question about GE Spacemaker JVM1640SJ Microwave Oven

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Model jvm1870 when door is closed light does not turn off and automatic fan kicks on even though nothing was selected. Thank you for helping me. Michael

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Sounds like switch that is triggered when door shuts,is not triggering.check around door opening for switch and push in by hand to see if it is working

Posted on Oct 09, 2010

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Ge spacemaker xl1800 vent fan


I'm betting your base model number is JVM1860, JVM1861, JVM1870, JVM1871, JVM3660, or JVM3670.
That's the automatic louver you're having trouble with. There are micro switches in the louver assembly which tell the controller when the louver is open or closed.
If one of those switches or the louver motor fails, the louver will not work correctly.
Did your cooktop lights recently fail?
Sometimes the surge from them shorting will cause damage to the circuit board, which can be repaired.
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.
There is a video here showing how to remove a typical over the range control panel assembly in under 5 minutes.
You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

May 03, 2013 | GE Profile Spacemaker XL 1800 36"...

1 Answer

Oven starts automatically when door is closed?


It would help to know the full model number and whether the oven is actually cooking by itself when you close the door, or if just the fan, light, and/or turntable is running when you shut the door.

But either way, the first place the start is with the door switches and mounts. My help file on those is here.

If those are good, it may need circuit board repair.

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

Nov 27, 2012 | Microwave Ovens

1 Answer

Samsung model smh7178std, shut the door and the fan and lights come on automatically, if i lift up on the door the fan shuts off but light stays on.


some switches are normally closed "short position" press switch "open" it will be labeled NC on the one side, "stands for normally closed" and others will be NO "stands for normally open" press switch "short" if there is no change in readings when you press switch it is defective.

Mar 28, 2012 | Samsung SMH7178STD Microwave Oven

2 Answers

I have a microwave oven over the range ,brand Frigidaire , model CFMV156DC purchased in 2006 and stopped working , even the lights on the front panel are on when I press the start button it happened just a...


I have exactly the same problem. Everything works perfectly even fan, except microwave table won't turn. I just found out what's the problem... The door for some reason is sitting too low now, even though it is not obvious at all. It looks leveled with everything else, but it's not. Set your Microwave to let's say 30 seconds and turn it on. It will not do anything... but you just gently lift the door (while closed of course) few millimeters and your Microwave will start running like new. There is something wrong with those latches on the door, not touching the microswitches inside the Microwave. Doors must be properly closed in order for Microwave to work. This is due to poorly design. I yet have to figure out how to fix that permanently.

Apr 15, 2011 | Frigidaire FMV156DC Microwave Oven

1 Answer

Microwave will not work


Even though you don't mention the model number, you posted under Sharp model R-1491, so I'll assume that's it.

You say when trying to work the actual microwave, you get nothing?

We could use a little clarification, but FixYa only gives you one shot at posting a help request.

When you enter the cooking time and press "Start", if the timer counts down and the oven lamp comes on, but the the turntable, cooling fan, and microwave section do not run, then you have a bad secondary interlock (bottom door switch) or its mount is bad.

We have the applicable service manuals for these models and have uploaded it to our site here and here to help you.

Also look at this info on door switch diagnosis and replacement.

Hope this helps.

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

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com
Microwave Oven Control Panel Repair Nationwide

May 30, 2010 | Sharp R-1491 Microwave Oven

1 Answer

I have a GE Spacemaker XL1800 over stove does not cook


This is usually caused by either a bad door switch or a loose door switch mount, which are pretty simple problems to fix.

Even though a door switch clicks, it may still be bad inside.

Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

If the switch mount is broken, it's usually more economical and safer to add a dab or two of hot glue to the mount to secure the switch. Let it cool for about 30 minutes before using.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

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.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

If you only need a switch, you can order a universal type here for $5 postpaid.

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

positivelock.jpg

Apr 18, 2010 | GE Microwave Ovens

2 Answers

My GE Built-in microwave model JVM1870 appears to have died


A microwave can be dead for many reasons.

It may be the fuse, which is usually located behind the grille, on the floor of the oven behind the control panel, between the door switches, or on the filter board near where the cord comes into the unit.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking TCOs or thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

If the cavity thermostat needs to be checked or replaced you'll need to pull the oven from the wall.

You can download GE owner's manuals and installation instructions here to make that easier.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

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

Dec 16, 2008 | GE JVM1870 Microwave Oven

1 Answer

GE JVM1870 Spacemaker Microwave Fan Malfunctioning when Cooking


There are two different fans in this model, as with almost all over the range microwaves.

One is the hood vent exhaust fan, which you can turn on and off at will, and which should always be on when cooking on the stove top.

This fan does not automatically come on when you cook with the microwave.

The fan which should always be on (automatically) when you are microwaving is the internal magnetron cooling fan.

If the cooling fan fails, the magnetron can overheat and the thermal cutout (TCO) / thermostat will open, killing the power to the oven. Ideally, this protects the magnetron from being destroyed.

If the thermal device is a thermostat, it will reset when it cools down, and the oven will work.

If the thermal device is a true thermal fuse, it is a one-time device and if it blows, it will have to be replaced.

If your cooling fan is bad, it needs to be replaced before using the microwave.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

Sep 16, 2008 | GE JVM1870 Microwave Oven

1 Answer

FAN TURNS ON AUTOMATICALLY WHEN DOOR IS OPENED


This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.

Even though a door switch clicks, it may still be bad inside.
If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk

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

Nov 19, 2007 | GE XL1800 1100 Watts Microwave Oven

1 Answer

Frigidaire microwave won t turn off


this is a problem with your programme timer these can be expensive to replace and because of the age you will probably be better buying a complete new unit as you could repair it and you could come across other related problems and could end up spending a fortune sorry i couldnt be any more help

Nov 08, 2007 | Microwave Ovens

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