Microwave packed up on a NEFF H7871 Combi. Burning smell, removed magnatron which appears to be the problem, not certain though. Do magnatrons burn up?

SOURCE: Power Problems on NEFF H7871 Combi Microwave

I currently have the same problem and Neff can't fix it. Problem is a short on one of the boards. Currently the required replacement boards are not available.

William Miller

• 9179 Answers
• Posted on Jul 06, 2008

SOURCE: neff h7871

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.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


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

SOURCE: burning smell microwave

The burning smell is most likely the rectifier burning. Look for a rectanguler black thing connecting from one lead of the capacitor to ground.

SOURCE: replace light bulb on the Neff H7871 combined oven and microwave.

The bulb is positioned at the top of the oven, accessible only from the outside. You'll need to pull off the top and bottom trim strips, remove the bottom trim strip locators, remove 2 fixing screws from the left edge of the oven (with door open), and the 2 fixing screws from behind the top trim strip. The oven should then just slide out. You only need to pull it out 6 inches or so to gain access to the bulb cover. You'll need a T20 driver to remove the cover, then the bulb unscrews as it has an SES fitting. Bob

SOURCE: sparking at the ceramic bush

If the ceramic bush, that is a good insulator of electricity, is arcing. Maybe it needs cleaning.