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hpr4068 :: Replacing a lightbulb in a microwave Oven

In this episode I record myself replacing a blown lightbulb in a microwave Oven.

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Hosted by MrX on Wednesday, 2024-03-06 is flagged as Explicit and is released under a CC-BY-SA license.
repair, electrical, DIY. 2.
The show is available on the Internet Archive at: https://archive.org/details/hpr4068

Listen in ogg, spx, or mp3 format. Play now:

Duration: 00:20:48

general.

Warning:

Microwave Ovens contain lethal voltages and components within the microwave oven can store lethal voltages for many hours after it is unplugged. Please only attempt this if you are qualified to do so.

Show Notes:

As I explained in the episode the bulb within our microwave oven failed after 10 years of use. It is surprising how difficult it is to determine how well the food is cooked without illumination. I therefore decided to have a go at replacing the internal light bulb.

Picture 1 shows the complete microwave
Complete microwave
Complete microwave
Click the thumbnail to see the full-sized image

Picture 2 shows the location and fitment of the faulty bulb in our microwave oven
Location and fitment of faulty bulb
Location and fitment of faulty bulb
Click the thumbnail to see the full-sized image

Picture 3 shows the faulty bulb removed
Faulty bulb removed
Faulty bulb removed
Click the thumbnail to see the full-sized image

Markings found on the faulty bulb revealed it was rated at 230v 20w bulb (I incorrectly stated in my podcast show that it was 30w).

Typing 230v 20w into google provided an amazon link for a replacement universal microwave bulb from Poweka. Two were provided in the packet though this wasn't clear from the description.

Replacement bulb from amazon

Comments

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Comment #1 posted on 2024-03-06 16:07:12 by Trey

Nicely done.

Easy repair, and well done.

When my microwave failed a few years ago, I discovered a very fried controller board. I used this as an excuse to harvest the transformer and replace the microwave.

The question I have been debating is: Should I use the transformer to make a small spot welder or to create fractal wood art with the high voltage side?

The later is tempting, but the risks are higher...

Comment #2 posted on 2024-03-08 07:38:27 by Ken Fallon

Be very careful

Messing with high current and voltages like this can kill you.

Youtube videos often play very light with safety. So if you are doing it (and I am not recommending you do), then be sure to rely on people that take safety seriously. Check multiple sources, employ safety protocols, have others trained and ready to assist if you are incapacitated.

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