Hello,
english isn't my native language so don't expect that my english is perfect.

-My TV:
Philips
3000 generation
name starts with 42PFL
Full HD

- XBOX 360 Slim (2010 edition)
- HDMI wire normal & the amazon one

2 weeks ago my xbox 360 worked perfectly with the hdmi wire and the tv but now i can't play xbox 360 in hd because every time i start the hdmi side mode the caption is: "This video mode isn't available". First i thought that the wire was damaged so i bought a new one but the problem is still there. I tryed it on an other tv (LG) and it worked (with the same hdmi wire). also my ps3 workes perfectly with the same wire and on the same tv. and if i start my xbox 360 with the av wire anything is ok.... so i reseted my xbox 360 display settings and the tv settings, but the problem is still there... Any idea????

Is it a
TV problem?
HDMI wire problem?
or Xbox 360 problem?