Did u check plug n internal fuse..lol. my diode that went to earth was the culprit coz my microwave leaked into base and diode to stop leakage to earth had blown
SOURCE: Constant Humm / Buzz but Works OK
I was going to suggest the low voltage transformer, but when you said it sounded like it was coming from the left side, that seemed odd. I have a stock transformer here I keep for test that is loud, but it works. Odd, eh?
SOURCE: DeLonghi combined microwave/grill/oven.
Found this posted in GE instead of DeLonghi but the basics are the same.
You say it stopped working - you mean it runs but doesn't heat?
SOURCE: Ge Spacemaker microwave jvm240 wv Micro hood combo.
sounds to me like the magnatron has shorted out. i don't know of a way to test them unless you have some high dollar equipment. a continuity test prob wont tell you anything. what reading did you get on the cap when you tested it?
SOURCE: Microwave - no heat
The filament reading sounds fine.
Here are some links you or someone you know can use for test help, but read their safety warnings first:
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html
Many brands have 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.
Please reply back with your brand and model number if you need further help.
We're happy to help and we appreciate your thoughtful rating of our answer.
SOURCE: HV diode producing resistance of 10 ohms.
you cannot check a microwave diode with just a mutli meter . you have to make a test jig take a 9 volt battery and a meter with dc volt scale set up the meter just like you would test a 9v battery .with me so far ? now remove one lead from the battery and insert the diode between the battery and the test lead .......take a reading . now reverse the diode take a reading ........ i just tested a diode before writeing this and this is what i got my battey volts where 9.2 v whith the diode inserted i got 7volts . reversing it i got .02 volts dc . a diode is a one way valve and mine is good because it passed curent only one way ...yours should be about the same ....... if you understand this please leave me 4 stars ! i even went out in the shop and tested a diode for you just to make sure my answer was correct
Some models may have a separate high voltage fuse. If this is blown, there will be no heating but no other symptoms. However, high voltage fuses are somewhat rare on domestic ovens.
A number of failures can result in the fuse NOT blowing but still no heat:
Depending on design, a number of other component failures could result in no heat as well including a defective relay or triac, interlock switch(s), and controller.
If you are interested in doing it yourself the following link will help : Microwave Repair Manual
(**All the above references to tests are found here)
460 views
Usually answered in minutes!
×