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I have an SF904WH oven which went dead on me, tried all the tricks to get it back but nothing, is there a thermal fuse in it somewhere?

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4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

SOURCE: Oven died while using convection feature

Thanks for the help !! It turned out to be the oven cavity TCO which is in the upper l/h corner under the grill.. I ordered the part which cost me $21.50 incl shipping.. It's not a big deal to change.. I'm just a little ticked off because I've only used this oven 3-4 times.. It was manufactured in July 2003 (I've had it in storage for two years untill my kitchen renovation was done).. If it's acting up now what else am I in store for ?? Well thanks again !!
AMT 

Posted on Oct 23, 2007

jsrock516
  • 5911 Answers

SOURCE: XL1800 GE Spacemaker Microwave oven "dead"

It's not good to run ANY microwave with the oven cavity empty. The items you place inside to cook or heat up act as a "load" and help to absorb/dissipate some of the RF energy. Your microwave has several thermstats installed that will blow in an overtemp condition. If you're lucky the Magnetron is still intact and only a thermostat has failed. The thermostats are small cylindrical devices mounted near the magentron and the oven cavity. They act as fuses and must be reset if blown. Go to geappliances.com and select "Parts & Accessories". Go the bottom of the next page and type in your model number. On the Search menu page select the second menu and type in "thermostat". There will be a series of thermostats listed with helpful drawings on where to locate them. I would advise you to check these drawings first and see if you can locate the thermstats to determine if they are bad. The thermostat should read a short (or very low resistance) if it is good. The part numbers are as follows:

Duct Thermostat (Item 27) ----------WB27X10714
Plate Thermostat (Item 115) ------- WB27X10713
Bi-Metal Thermostat (Item 110)-----WB27X10788

They all cost about $15.00 a piece.

Some additional advice: Make sure you unplug the microwave before servicing. If you are not savvy when it comes to electronics, or have never worked on a microwave before, it may not be adviseable to work on this yourself. Voltage potentials inside the High Voltage section of a microwave oven (where the Magentron is located) can be dangerous. There is a large capacitor that can store a charge and can be a shock hazard.

I hope this isn't discouraging to you, I just wanted to make you aware of some of the possible hazards associated with this appliance. I hope you find information helpful, and let me know if you need further assistance.

PS The alternative if all the thermostats are good, would be to check and/or replace the magnetron. (Item 73, Part #WB27X10305 at $115.00)

Posted on Apr 24, 2008

  • 8909 Answers

SOURCE: Problem with the Bosch HME9760

Dead appliance, power on wall outlet.

YOUR SAFETY IS PARAMOUNT!

Attempt this only if you are competent.

If your appliance has absolutely no functions at all, remove it from the mains supply, remove the case and see where the mains lead goes in to the appliance and follow the cable until you find the main fuse.
ONLY USE THE SAME TYPE AND RATING OF FUSE TO REPLACE IT.
The usual cause of this fuse failure is the door switches are contaminated or sticking. Check the door switches before putting power back on to the appliance.
Hope this helps.

Posted on Jan 06, 2011

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1 Answer

Hi. my micromark MM60106 oven seems to be dead ,no red light, no heat ,no fan. power is getting to the switch but nothing works, do I need a new selector switch



Try using the VOM
First check is the main fuse of the unit. On countertop units, you will need to take the shell off. The fuse will be close to where the cord comes through into the unit. OTR units, this main fuse is usually behind the control panel or possibly behind the vent. Usually the fuse is obvious if blown, otherwise test with an OHM meter, if open, replace fuse.
Some brands will also have a thermal cut-off fuse in the incoming voltage line to the control board. Older Maytags and Samsungs have this fuse in it. This thermostat looking fuse is usually above the oven cavity somewhere under the outside shell. Sometimes you can get to it through the vent of OTR models. Test with an OHM meter, replace if open.
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Apr 02, 2013 | Microwave Ovens

1 Answer

Oven has been working fine. Heating a cup of coffee it just stopped dead. No display. Nothing. Power to outlet working fine. Is there a reset somewhere?


Mine did this when my wife had it on full power for over 10 minutes. We left it set for 15 or so minutes and it came back on. It did the same thing when my niece was heating a liquid with some metal in it. It eventually came back on. There must be a thermal circuit breaker inside the unit. Yours may have a fuse or some sort of circuit breaker inside it, that needs replacing or resetting. Then again some units have a fuse that goes out when the Magnetron shorts out, or goes bad. This would require replacing the Magnetron as well as the fuse.

Sep 12, 2009 | Sharp R-326FS 1100 Watts Microwave Oven

1 Answer

Microwave went dead


Hi

If your microwave oven doesn't seem to work at all, check these: Fuses Usually, when your microwave oven doesn't work it all, the internal fuse (thermal fuse) is blown. This fuse protects both you and the oven. When it blows, you need to have a qualified appliance repair technician replace it.

Door switch If the fuse isn't the problem, check the door hooks and the door-release button. When these are broken, the door switch doesn't activate, so the oven can't work.


Please do rate the solution as FixYa and revert for further assistance.

Thanks
Rylee

Apr 26, 2009 | Whirlpool MH7140XF Microwave Oven

1 Answer

No power


A microwave can be dead for many reasons.

It may be the fuse, which is usually located behind the grille or on the floor of the oven behind the control panel or between the door switches.

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

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.

If not, please reply back with your brand and model number so we can help you better.

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

Aug 18, 2008 | Samsung Microwave Ovens

1 Answer

Kenmore over the range microwave quit working 665.61639100


My bet is that the unit overheated and the magnetron is equipped with a thermal cutout (TCO or thermal fuse) and it blew,
protecting the magnetron.

If it runs dry, it will overheat.

But a microwave can be dead for many reasons.

It may be the fuse, which is usually located on the floor of the oven behind the control panel or between the door switches.

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

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.

If you do end up needing to take it down from the wall, you can download GE owner's manuals and installation instructions here.

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

Jul 27, 2008 | Microwave Ovens

1 Answer

No Lights just turned off


Chances are the magnetron overheated and the blew the thermal cutout (TCO or thermal fuse), thus protecting the magnetron.

Bacon has a fairly low moisture level and when can cause overheating if there's no water load in the oven.

That said, a microwave can be dead for many reasons.

It may be the fuse, which is usually located on the floor of the oven behind the control panel or between the door switches.

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

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 and we'd appreciate your thoughtful rating of our answer.

Jul 27, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Microwave/convection oven simply lost power. not the outlet checked with hand mixer and worked find. is there a fuse that went out? how much to repair? thankx!


The fuse is usually located either between the door switches or on the floor of the oven behind the control panel.

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.

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 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 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: http://tinyurl.com/yzjozk

We may have the service manual which we can upload for you. Please reply back with your brand and model number so we can help you.

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

Jul 02, 2008 | Sharp Microwave Ovens

1 Answer

Advantium oven has no power


A microwave can be dead for many reasons.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the thermostat to open. When it cools, it closes the circuit and allows power through again.

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

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

If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

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

Nov 18, 2007 | GE Advantium SCA2000B Microwave Oven

1 Answer

Frigidaire Microwave


Dead? You mean no power, no lights, no beeps, nothing?

It's most likely a blown thermostat / thermal cutout on the magentron, based on your info.

But if you can post the model number I may be able to steer you better.

More generic info:

A microwave can be dead for many reasons.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the thermostat to open. When it cools, it closes the circuit and allows power through again.

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

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

If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

Oct 28, 2007 | Microwave Ovens

2 Answers

Kenmore elite microwave oven


A microwave can be dead for many reasons.

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

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

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

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

If you or a friend decide to look into it, we have critical safety information and disassembly information at our site,
linked here on Fixya: http://tinyurl.com/yzjozk

Oct 23, 2007 | Kenmore 63792 Microwave Oven

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