Brand: indesit Model Number: DSIE 2B10 UK Main Symptom: it won’t turn on at all. What happens & when: A cable to the main PCB was cut by the door, causing a short that burned the old board. I repaired the cable and replaced both the main board and the top button panel. Power to the main board measures 220 V AC. The door safety switch works and shows continuity.
The connector from the lower board to the top panel has 5 pins, split into 2 pins plus 3 pins. In the group of 3 pins, one measures 12 V, one is 0 V (probably common or ground), and the third is a signal line. The two pins without voltage show 3.7 MΩ, which drops to 0.25 MΩ when pressing the power button, indicating the button is sending a signal. Continuity between the lower board and upper panel is 0 Ω. 12 V also reaches the top panel and the safety switch, which shows continuity when latched.
The dishwasher does not turn on at all, no lights, no clicks, no motor activity.
What else could prevent it from powering on, if power, boards, cables, and switches are all OK? Could it be a motor, internal sensor, or something else blocking the start? Is it time to scrap it and buy a new dishwasher?
It sounds like the issue lies with the interface control. More than likely, the wire harness being damaged the way it was created an electrical short. This can cause all kinds of mayhem on electronics. Since the main PCB and the harness have been replaced, and there is voltage supply reaching the interface panel, the process of elimination would suggest the interface control would be the cause of failure.
Thank you for your reply, I have tried with a new panel a nothing. And just to clarify I didn’t replace the whole harness just the damaged wired. I cut the burned part and crimped it to the conector. Could the machine be stuck in a safety interlock state? Is there any active safety feature or sensor that might be preventing the main board from powering up? Or these machine aren’t that sophisticated and it should turn on regardless. Showing maybe some errors?
There are units with main controls that will shut down an entire appliance and not allow it to power on if it does not identify a signal to and from the interface control. It is very possible the unit could be stuck in a safety off state. It may be possible that there was another component damaged when the wire was cut.