Fixing Bosch Dishwasher that can't turn on

[Potata]

I am new to fixing electronics but I would like to try fixing this Bosch dishwasher. Appreciate any help! Not sure why it stopped working, area was a damp but no visible corrosion from water damage.
Model: SKS60E02EU/01
Image of the power module board. No visible burns or burnt smells.


Control Board: Also no visible damage.


Used multimeter to:
- Check the power cable, it works.
- Power switch also works.
- capacitor and resistor seem to work on the board.
- tested the TNY264GN resistance as my search found that this is a common failure point.
pin 1 to pin 4 20Mohm
pin 1 to pin 5 values slowly drops
pin 2 to pin 4 20Mohm
pin 2 to pin 5 values slowly drops
pin 7 to pin 4 20Mohm
pin 7 to pin 5 values slowly drops
pin 8 to pin 4 20Mohm
pin 8 to pin 5 values slowly drops

 

[shrtrnd]

The problem might not be in the power or control boards. Check the obvious alternatives also.
Switch that senses when the dishwasher door is closed (or not).
Clogged pump tubing.
Anything the manual or website troubleshooting for your model mentions.
There are so many sensors in these modern appliances that can cause the unit to stop working
that the problem is not an electronic 'failure', as much as it is an engineered 'hold' on normal operation.
Good luck with troubleshooting.

 

[SpiderMan]

Is your display powered? Any error codes?? If display completely dead, first thing to check for on main power PCB is for cold solder joints on electrical connector. Inspect and continuity check. If your lucky, just a quick re-solder of power or ground pin will bring things back to life. Speaking from experience with Bosch dishwasher...