Microwave oven repair
#1
02-06-16, 09:05 AM
Microwave oven repair
I tried to fix old microwave oven by myself, because its hard to find proper facing on the wall.
It looks run, but no heat.
I googled here and there.
Main fuse is OK, door switch is ok.
Some says high voltage diode might be wrong, and I changed, didn't work.
I found your website says two disc might be wrong.
However I couldn't figure out what is those disc?
Both are discs?
What should be measurement? Zero ohm?
It looks run, but no heat.
I googled here and there.
Main fuse is OK, door switch is ok.
Some says high voltage diode might be wrong, and I changed, didn't work.
I found your website says two disc might be wrong.
However I couldn't figure out what is those disc?
Both are discs?
What should be measurement? Zero ohm?
Last edited by hansoldc; 02-06-16 at 09:51 AM.
#2
02-06-16, 09:32 AM
Group Moderator
Welcome to the forums.
I moved your thread here to the small appliance forum.
Be very careful working around the diode, capacitor and magnetron area as it is extremely high voltage and the capacitor can hold a charge long after the power is turned off.
That larger round thing on the top is the microwave stirring motor.
That smaller round item is a limit stat. Remove one of the wires from it before checking it.
It should check as a dead short.... close to 0 ohms.
What's the make and model of that unit ?
I moved your thread here to the small appliance forum.
Be very careful working around the diode, capacitor and magnetron area as it is extremely high voltage and the capacitor can hold a charge long after the power is turned off.
That larger round thing on the top is the microwave stirring motor.
That smaller round item is a limit stat. Remove one of the wires from it before checking it.
It should check as a dead short.... close to 0 ohms.
What's the make and model of that unit ?
#4
02-06-16, 10:43 AM
Group Moderator
Microwave repair is not considered DIY repair work so be careful.
Be sure to discharge the capacitor whenever you make any measurements in the HV area.
You've checked the diode. Shows resistance in one direction and none in the other ?
You'll need to check the capacitor for shorts or open.
If good you'll need to confirm 120vac to the PRIMARY side of the transformer. You DO NOT want to measure the secondary side.
Be sure to discharge the capacitor whenever you make any measurements in the HV area.
You've checked the diode. Shows resistance in one direction and none in the other ?
You'll need to check the capacitor for shorts or open.
If good you'll need to confirm 120vac to the PRIMARY side of the transformer. You DO NOT want to measure the secondary side.
