My xbox 360 has no sound and now no picture when it is turned on
It used to have picture but the color was really light, when it would change to a new screen, right before that the color would come back and then dim again. Now it has nothing. I tried unpluging the power cords and re pluging them but nothing.
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First take off my hard drive on the 360. Then plug it to the tv not with HDTV (use the red, yellow and white make sure it is on tv not HDTV) because it will not work for HDTV setting . then plugit into the wall with the 360 laying down not up and down and turned it on. (no picture but sound) with the 360 on take 1 towel fold it long ways and wraped it around 360 from back to front (make sure you cover the fans in the back to make it over heat.) leave your 360 on until it red rings (you can hear the 360 quit down. it takes about 15-30 mins depending on how fast it over heats. once this happens unwrap the 360 and turn it off wait 5 secs and power it back on and there you go you should have picture and sound again. if you still have problem you can now can send it to get repaired since there is a 3 year warrenty for red ringed 360's.
They are green?!? usualy when people have problems with the xbox 360 hardware, the lights turn red. This xbox 360 may have a birth defect... Best thing to do is call 1800-4my-xbox. Talk to a representative about sending your xbox in, ONLY if you have not voided the warranty. If so, you will most likely have to buy a new xbox or new motherboard for it.
Also try changing your video settings to tv instead of hd, or hd if it is plugged into a hd tv. You might have toggled the HD switch on the video/audio chords.
First thing would be to make sure that you're only using the yellow, red, and white cables, but seeing as how you said you had picture before, I'm guessing that's not the problem. The 360 uses an automatic recognition for the hardware to make sure that it is set to the right input. So, in essence, it won't be that the settings were changed. I would say go pick up a new cable and see if that's the problem, it sounds like it is. If the cable doesn't solve it then I would say it's time to call Microsoft. For the guest with nothing working, call up Microsoft, I really don't know what else the problem could be except for hardware.
where you put the cables for the sound and picture if you look on the end where you plug it into the xbox 360 you will see a little switch it has HD and TV on it depending on what your tv supports (HD ready TV) (normal TV) switch that switch to what TV you have (e.g. HD TV, switch the switch to HD) if that doesnt work then try checking that you have all the cables in the right ports if you have pluged the HD cables into a normal TV then this is not going to work, check cables and check the switch!
use the towell trick! Wrap the 360 in 2 towells turn on and leave running for 15 minutes. It gets very hot but after the 15 minutes turn off the console and power it back on again and it should work. Dont know if this is a permanent fix but my 360 hasnt broken again so far. Dont ask me how but it works, google it if you like. It also cures the 3 red lights problem.