The oven runs without primary to the transformer. The fuse does not blow.

I disconected megatron, capacitor , diode from transformer and connected primary only. The fuse blows.

since the over runs okay without transformer connected, (only fan runs without primary), I eliminated door switches.

Since the fuse blows without connecting to megatron, capacitor, diode, I eliminated those as well. I have new diode and capacitor installed though

so I checked primary, secondary and high voltage from transformer. nothing is shorted. The only thing I noticed is resistance between high voltage and core(body) is 0.03 ohm. From what I goggled, it needs to be higher than that. 75-200ohm? I am not sure what it means.

Should I just replace the transformer?..or is there anything else i should check or am I checking wrong?

⟐ Answered October 29, 2024 at 21:10 MST

My wife told me she saw a spark inside and turned it off. When I tried, I didn’t see any spark but tripped a breaker. When I tried again, it became dead. Each time there was unusual loud humming or buzzing noise.

Based on my reading, it can be a bad switch, capacity.. Fuse must be blown with the second trial.

what else could be the cause of the issue? I am going to replace capacitor and door switch.

⟐ Edited January 08, 2024 at 13:14 MST

for a GE Mircrowave?

⟐ Edited December 22, 2023 at 11:06 MST

There are no screws on sides or top only one little screw on the bottom attached to a thin metal strip.

⟐ Edited December 22, 2023 at 11:05 MST