It depends what the red light is doing:
One segment is flashing
System Error - contact Microsoft support
Help: http://support.Microsoft.com/kb/907536
Three Red Solid lights
Red ring of death im afraid
Help: http://support.Microsoft.com/kb/907534
it is the red ring of death try wrapping it in a towel
get a new xbox (its dead)
The red ring of death represents hardware falure. contact xbox if you see any red lights on your xbox. they are all bad. if you see 3 red flashing lights, that is the red ring of death.
You Might have a red ring
Two red lights mean that the Xbox 360 is overheating. This is not caused by the hard drive but more likely by the location that the xbox is in, or if it was run for an overly extended period of time. The hard drive is still usable and can be safely used on the new xbox.
that means you got two of the four parts of the red ring of death
You can take the harddrive out so yeah it works
When they go red,you either dont have the TV inputs plugged in,or your 360 has had system hardware failure from consistent hours of playing.you'll have to send in your 360 in to Microsoft to get it repaired(it may take a few weaks).Also,if the lights go red,immediatly turn your 360 off put a towel over it and put a cool ice pack on top of it,if you do it every time it happens,your 360 will keep playing for a couple of days if you dont play it for more than one hour.After that send(sending it in is free) it in,or buy a new one.
If your Xbox has three red lights, it most likely means you have some form of Red Rings. You need to contact Microsoft, and check to see if your warranty is still covering your Xbox 360. If not, you probably will have to buy a new one.
4 lights is NOT the red ring of death. Different sets of lights mean different things. The RROD is 3 lights (general hardware fault). Having 4 red lights means the AV connection is not working. First thing is to unplug and replug all the AV connections. If that doesn't work, the next step would be replacing the cables Hope It Helps
Well no. . . but to be sure its really not "Red Eye" make sure you check out your cables, make sure nothing is messed up, "Red Eye" is when your ring lights up red for no reason, if it happens turn it off immediatly and let it cool down for about 5 hours, then turn it back on if it doesnt work your screwed.I f this happens to you, take it or mail it to the makers, erm should be a mailing address on any Xbox360 box.
It's basiclly the same thing as the red ring of death on an Xbox 360.Or in other words your dishwasher is dead.