No lights anywhere on the printer come on when I power up my Canon mp780 printer. The only image that APPEARS in the display is a segment bar accross the bottom of the screen. Looking through a magnifier, each segment (20 off) look like small solar panels. Also not lit. Nothing else happens. Can do nothing from there.This sounds like a failure of the internal power supply unit which is KNOWN as a fault on this unit. Before anything else if i had access to another power cable i would try that (provided the power cable is NOT hardwired at the printer end.In the category of the "is the power cable plugged into the wall socket". There is usually an off/on switch on the REAR of the printer. Is it in the on POSITION? Bear in mind if you cannot get it going seldom is it economically PRACTICAL to have a printer repaired--replacement is usually cheaper. truenorthPardon me. The printer is not worth repair unless it is quick and easy.

On eBay the printer sell for under $50. With warranty.