anyone knows how much to repair it?
Plugged into my Monitor nothing is displayed via HDMI cable, tried on my laptop to monitor via HDMI cable no problem.

Used the normal color cable plugged into my old tv everything can run smoothly.. seems like the port faulty..

Any idea how much it cost?

same goes to me...
when I plugged the xbox360 via hdmi to TV, nothing appear... 1st thought that my xbox going to dead....
then tried the connection via rca cable... it works fine... but the graphic is not like using HDMI....
then, tried to plugged the xbox360 to monitor cia hdmi + hdmi to dvi converter... it show the menu, but in mono colour, sometimes yellow, sometimes gree...