Neff microwave oven

[DP]

I have this integrated microwave oven.
Couple of days ago I pulled the Beko condensing tumble dryer out to clean behind it.
The microwave is fitted above the twin oven against the opposite wall
While the dryer was out of its slot under the worktop, there was a bang and the power tripped.

Restored the power and commenced to set the microwave clock to correct time- breaker tripped again.

I looked at the mains filter inside the oven. No damaged parts. Caps measured the stamped value. Resistance across the L and N is 77k ohms. Disconnected the lead going to power supply and plugged in the microwave that only had the filter connected- nothing beyond. No ibreaker tripped again
Fuse on the filter board is intact.

Is it realistic to repair the oven by self or by Neff. Breaker tripping seems to suggest leakage to earth issue or am I talking rubbish
Breakers are MBCOs

Thanks for looking at the post

 

[Wayners]

What caused the trip?

 

[jj4091]

So the dryer is a red herring and nothing to do with the fault ?
Did you try the microwave with the dryer disconnected and vice versa. It is unclear, as Wayners suggests ,which, if either, is the problem from your discription.
You need to test the resistance between live/neutral and earth as well as live and neutral
If it is the microwave then it is unlikely to be a diy repair but it's worth asking Neff if they do a fixed price repair before you decide to replace it

 

[DP]

What caused the trip?

Trip caused by microwave.

So the dryer is a red herring and nothing to do with the fault ?
Did you try the microwave with the dryer disconnected and vice versa. It is unclear, as Wayners suggests ,which, if either, is the problem from your discription.
You need to test the resistance between live/neutral and earth as well as live and neutral
If it is the microwave then it is unlikely to be a diy repair but it's worth asking Neff if they do a fixed price repair before you decide to replace it

Yes dryer had zilch to do with the tripping

Did check the resistance. Is as indicated in the post between L&N
No Reading when L or N measured to E
Meter used is Fluke 289

Will give Neff a call and ask for FPR. Thanks for that pointer

Thought as much re DIY repair. Took the cover off to see if peripheral component like the suppressor was the issue. It is not a short circuit else the fuse would have blown, but was quite a thump when the power was interrupted ( twice)

 

[Wayners]

You have tried the microwave in a known good socket?
Customer bought a new dishwasher because of no power but it turned out to be the bread bin was moved hitting a switched spur cutting power to dishwasher socket.
£550 wasted! Scrap man took the old perfectly good dishwasher away. Ha.
I know it's not dead power but cable or sockets could be faulty..
I've know spurs and cables melt tripping box.
The microwave will have an internal fuse. Check that. Sometimes it's built-in so not easy to replace. I've bypassed fueses that are built in as a fix in appliances.
Use a multimeter and trace power inside microwave. See if you can find where it goes dead.
Do it with the continuity test so it's safe. Don't test with 240v running through fgs!...

As for fix.
Neff £109 callout plus plus parts and labour.
Probably worth it as we all want to know what's wrong. Ha

 

[foxhole]

How old is microwave ?