Canon printer pixma MP610 no power no display

Zeeland

TS Rookie
Hi

I have a printer
There is no lighting up
The power supply give
red wire about 7 V
blue wire about 11 V

Holding down the power button en stop/reset won't work

How can I test the logic board is defect?

Image logig board
CanonPixmaMP610.jpg

Cheers
Harrie