After switching off the fan, few minutes after found microwave was dead. Open the control panel main fuse 125V 20AMP fuse dead. Can we replace the fuse with 250V 20AMP. Please advise
Yes you can,
SOURCE: Replacing the fuse of a MCO160UW
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 may 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 and we'd appreciate your
thoughtful rating of our answer.
SOURCE: GE Microwave Spacemaker oven, Model JVM240
That would almost certainly be a problem on the control circuit board. If the bulbs happen to short / blow out or if they are removed or installed while the microwave is still plugged in, there is often an arc which causes damage to the board. We repair regularly these boards for such problems for $32.50 nationwide.
SOURCE: Microwave Oven completely dead
I sure hope the hood fan was on... It should always be on whenever you're boiling on the stove top, otherwise moisture can get into the microwave controls. The typical microwave will have just one power line fuse and two thermal fuses and/or thermostats, and the failure of any one of these can render the oven "dead". One thermostat / thermal cutout will be on or near the magnetron and one will be on top of the chassis / cavity. Does the inside light come on when you open the door? If so, then it's probably a problem in the control unit. If not, then it may be a bad thermostat or thermal cutout but it may still be the control unit. We have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You may find helpful exploded view diagrams and order parts by entering your base model number (without the suffix) here: http://tinyurl.com/gv383 or http://www3.sears.com If you think it's a problem with the control panel, we repair those for $32.50 nationwide in most cases. Full info is available via our listing here on FixYa: http://tinyurl.com/yzjozk
SOURCE: Magic Chef Model#MCMY10SCC-No Heat-Smoke coming out
To obtain warranty service on your Magic Chef or E-Wave product within the initial one year
warranty period please complete the form here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
SOURCE: Panasonic nn-p295 blows buss fuse when turned on for cooking
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. But this is likely an inverter model, so it wouldn't have one and would be some other component in the inverter I'd say.
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 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.
Here are some links you
or someone you know can use (in order given) for test help, but read
the safety warnings first:
http://www.microwavedisplay.com/safety.txt
http://www.microwavedisplay.com/disassembly.txt
http://www.microwavedisplay.com/doorsw.txt
http://www.gallawa.com/microtech/cap_test.html
http://www.gallawa.com/microtech/xformer.html
http://www.gallawa.com/microtech/mag_test.html
The best place to order
Sharp parts is Tritronics. Or you can call them toll-free at 866-779-5835.
We're
happy to help you with free advice and we'd appreciate your
thoughtful rating of our answer.
That does indeed sound like the mag is overheating and the thermostat is tripping, but it's probably not the steam.
Do you feel a good amount of air flowing through the vents?
If the cooling fan is not running or the air vents are blocked, that wil allow the magnetron to overheat.
If air flow is not a problem, then you may have a defective magnetron.
Assuming it's still under warranty, it would be best to let a Magic Chef-authorized servicer handle it.
For more help from Magic Chef / Ewave : http://www.mcappliance.com/ ; Contact page http://www.mcappliance.com/contactus/contactus.asp ; Order
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