I know this might be obvious to some, but I thought I'd make a post about it seeing the amount of FUD and nonsense people chucked at me over this. If your Xbox 360 starts to show the dreaded 'green tint' on the screen, don't instantly assume that the console is on it's way back to MS in a cardboard coffin. Simply, get someone else's console and check your AV cable. So many, many people I mentioned my 'green-tint' picture to replied 'looks like your consoles dying, do some surgery!/call Microsoft!'. Luckily I didn't, and with a replacement cable, my consoles back to it's technicolor self. I do wonder how many people have destroyed their consoles (and their warranties) by not doing something as simple as this. On a related note: MadCatz 'lifetime guarantees' aren't worth the cardboard they're printed on, as they will only apply if you return them complete in packaging, and only in the US. Seeing as most of their cables come in clamshells which have to be cut open with a chainsaw, the likelihood that they will honour their guarantee is almost zero.
They will if you keep the clamshell, even if you cut it open. I've returned stuff to them before in the same manner.
Interesting stuff, but sadly it wasn't the cause of the 'fairy washing up liquid' (aka Bastard Fairy) that killed my old unit (going back some time now), but I was convinced it was the firmware update the unit ran through a few minutes before it started to screw up. This was also O.E. suspicion at the time when his friend's unit did precisely the same. Guess it always does pay to test everything prior to shipping back to MS however. My neighbor complained to me that a unit I had sourced for him was duff out of the box, but when I went round he'd just not inserted the AV cable properly.............. *cough!*