Takes much longer now to heat things

my Daewoo microwave over heats on the right hand side of the external casein wen in use model number is kor6n9rr is there any thing majorly wrong please get bk to me on my email which is bridgetyork @.co.uk

Time for a new cover plate or a new microwave. Depending on the age of the unit, the part may not be available anymore.

I don't know how old your oven is, but this might just be due to aging. The magnetron tube which makes the microwaves loses power over time, so it takes longer to heat your food. It also causes the tube to work harder and get hotter, so sooner or later the tube either burns out or causes the safety thermostat attached to it to trip. This causes a dead oven.

The tube can be replaced, but unless this is a high-end model or a built-in, it may be more economical to buy a new oven. New tubes are $75 to $100, and there's the labor cost for the repair. I don't recommend trying to fix microwaves yourself because of dangerous voltages and the possibility of microwave leakage if the repairs aren't done correctly.

Hope this helps. Thanks for using Fixya!

The microwaves are produced by what is known as a KLYSTRON TUBE. Like anything, early failure is possible. There is also the possibility that the transformer or electronic circuit providing the correct voltage to the KLYSTRON has failed, either from over-use, manufacturing defect, or leakage from the KLYSTRON enclosure, which creates heat.
With microwaves being as CHEAP as they are, replacement should not be an issue.

If it's less than one year old, it would be fully covered under warranty and you should contact the manufacturer to get it fixed free.

Some have longer warranties, and that will be covered in your owner's manual.

I can adjust the power level so that circuitry seems to be ok. The longer water boil time could be partially due to the colder winter temperature of the inlet water. We'll just cook the food a bit longer as long as the magnetron is still working.

Yes, GE Customer Service is here, and they can tell you what model would be a "drop-in" replacement for your model.

If you or someone you know would rather fix yours, which can often be done pretty easily, (on some models the magnetrons have 10 year warranties) please post a NEW FixYa inquiry that includes your full model number from the tag in or on the unit, and the answer to these questions:

- When you try to microwave, do the inside light, internal cooling fan, and the turntable all come on?

- Is it louder or quieter than usual?

- Is it making any odd noises?

(We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are working.)

Otherwise, if this takes care of you...

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

u need to clean the cavity inside the microwave .. step to clean that .. put a cup of water nearly half filled( 30 ml ) and start microwave for five minutes .. after that just open microwave and clean from inside with clean cotton cloth .. this will surely help ..

Sounds like a component failure in the microwave circuit.

It will be one or more of the following -

Fuse
Diode
Capacitor
Transformer
Magnetron

Reply back and I can help you more. These failures happens to new or old microwaves.

use a high voltage probe to check high voltage, if present replace the magnatron if no HV replace the high voltage board this is the board that has the heavy wires to the magnatron