I am still waiting on your response ?
I have another Canon printer that has the same power cord/supply to the printer. I tested the power cord from the Canon ix6650 with my other Canon printer and that worked fine.
I have tested them both on separate outlets. both have been tested by plugging them into the mains supply. The ix6550 does not power on but my other Canon printer does, both using the same power supply cable.
I have tried this, my other Canon printer switches on but the Canon ix6550 does not.
No sign of power and the machine is just over a year old.
No extended warranty and the machine was purchased 15 months ago.