Mp c2050 (no display and no print)

[sharpmind]

Guys, I have MP C2050 which shows no display. The engine initializes but when you press the touch panel it does not give any click sound. I try to print from the computer but it does not print either. I reseat all the connectors in operation panel and in the main boards but still no luck. All fuses in the power supply unit are good.

Any ideas about this kind of problem?Please help.Thanks!