Hello Everyone.
I have an automatic washing machine from Daewoo which recently started showing pressure sensor error but would run after a restart. I ignored the error and eventually it stopped responding on power ON button. On some investigation i found that the power supply circuit is fine and even the microcontroller is receiving power on VDD pin. However, there was no power available on the power switch input line which is coming from the microcontroller. So, i am assuming that the microcontroller is faulty. (Please correct me if my assumption is correct)
I need advice on how to confirm that this is the problem in the circuit. And if only this is the fault in the circuit, how to replace the microcontroller. i think simply changing the device will not suffice because it will need programming also. Will simply changing the IC solve the issue or i have to program it also.
Kindly, help me on this as i am not even able to find a replacement board for this machine. If not repaired, i have to scrap it which i don't want because rest of the machine is absolutely fine.
I have an automatic washing machine from Daewoo which recently started showing pressure sensor error but would run after a restart. I ignored the error and eventually it stopped responding on power ON button. On some investigation i found that the power supply circuit is fine and even the microcontroller is receiving power on VDD pin. However, there was no power available on the power switch input line which is coming from the microcontroller. So, i am assuming that the microcontroller is faulty. (Please correct me if my assumption is correct)
I need advice on how to confirm that this is the problem in the circuit. And if only this is the fault in the circuit, how to replace the microcontroller. i think simply changing the device will not suffice because it will need programming also. Will simply changing the IC solve the issue or i have to program it also.
Kindly, help me on this as i am not even able to find a replacement board for this machine. If not repaired, i have to scrap it which i don't want because rest of the machine is absolutely fine.
Attachments
-
160.3 KB Views: 6