Dear experts
As of a sudden our microwave oven stopped powering on. I removed the cover, checked the fuses, thermal cutouts and switches, all were fine but there was no power feeding into high voltage transformer. I removed the PCB board and noticed that the circuit was blown out in two places as shown in picture below:
At points 1 and 2 electricity is being fed into low voltage transformer which is located at the other side of the board. I soldered some wires for reconnecting the lost circuit and placed the PCB to check how it performs. As I plugged in the power cord to the main, the circuit blown again at the back of low voltage transformer PCB.
Back view of low voltage transformer
Front view of low voltage transformer
The red line is where the circuit is blown up between two components. Now I am not sure where is the problem, is it due to a bad diode or a malfunctioning relay or something else? I really appreciate any help in this regard.
Below are some pictures for more clarification on PCB
Top view of PCB
Schematic diagram
As of a sudden our microwave oven stopped powering on. I removed the cover, checked the fuses, thermal cutouts and switches, all were fine but there was no power feeding into high voltage transformer. I removed the PCB board and noticed that the circuit was blown out in two places as shown in picture below:
At points 1 and 2 electricity is being fed into low voltage transformer which is located at the other side of the board. I soldered some wires for reconnecting the lost circuit and placed the PCB to check how it performs. As I plugged in the power cord to the main, the circuit blown again at the back of low voltage transformer PCB.
Back view of low voltage transformer
Front view of low voltage transformer
The red line is where the circuit is blown up between two components. Now I am not sure where is the problem, is it due to a bad diode or a malfunctioning relay or something else? I really appreciate any help in this regard.
Below are some pictures for more clarification on PCB
Top view of PCB
Schematic diagram