- Thread starter Onoff
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I used to visit Ilford Photochemical as a contractor, at lunch there was a canteen regular who melted portion size butter wraps on a plate in one of the microwaves, 2.7kW input. He would stand close to look through the window in order to monitor the "doneness" and his face would be lit up by the activity inside the cooking chamber. It was in Cheshire, "strong in arm...".
Onoff
In the land of the unfinished project I am King!
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Hmmm...
First off the microwave made a noise and stopped heating. The screen etc worked fine.
The magnetron measures under 1 ohm, circa 0.3.
Did an IR test between each terminal on the magnetron to the case, infinity.
The cap measures 1uF.
The diode appears OK testing it with a 9V battery in series.
The 750mA, 5KV fuse had popped. I replaced it and swapped the cap out as the 1uF looked a bit swollen perhaps even though it tested OK. I only had a 1.14uF cap so put that in.
Turning on and it seemed to start but then popped an 8A fuse. This one I'm pointing to. Now the screen is dead.
First off the microwave made a noise and stopped heating. The screen etc worked fine.
The magnetron measures under 1 ohm, circa 0.3.
Did an IR test between each terminal on the magnetron to the case, infinity.
The cap measures 1uF.
The diode appears OK testing it with a 9V battery in series.
The 750mA, 5KV fuse had popped. I replaced it and swapped the cap out as the 1uF looked a bit swollen perhaps even though it tested OK. I only had a 1.14uF cap so put that in.
Turning on and it seemed to start but then popped an 8A fuse. This one I'm pointing to. Now the screen is dead.
Smallfry
HE's Spartacus.
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I am surprised it works at all, after cutting a lump out of the casing.
Onoff
In the land of the unfinished project I am King!
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- 13,132
- Location
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I am surprised it works at all, after cutting a lump out of the casing.
Only tried the microwave. Not the oven or grill yet.
rtcosic
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Spontaneous Parthenogenesis of the required part? Or did you intervene?
Onoff
In the land of the unfinished project I am King!
- Messages
- 13,132
- Location
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Actually gave up originally but SWMBO kept on. Took to a place someone recommended up the pub.
Bloke confirmed it was just the original 1uF capacitor was duff as I suspected. Weird as I'd replaced it with a new 1.14uF and it still popped the internal fuse.
I'd have thought that with the tolerance on 1.14uF it would have been fine.
