My Xbox 360 has sound, but no picture and no red lights

Your hanna chip (output) is fried......sorry

his indicates a hardware failure inside the xbox. Your xbox 360 will need to be serviced by Microsoft. There are many internal problems that can cause the three red lights, also known as the "red ring of death" If you would like more information, wikipedia has a good explanation.

You can call 1-800-4MY-XBOX to start the repair process with Microsoft.

they all are man made thats why they don't wrok

ur xbox 360 is in high def turn ur xox 360 with ur controller and hold r trigger and y button together till it turns on. if it dont work than u got the rings of death try this there are fans in the back of ur xbox 360 put a straw on each to stop the fans from spinning wait till it has two red lights than disconected from the back and wait 20 minutes and try it see if it work. if it work this is just a temperary fix.

make sure the switch at the back of xbox is on tv or hd, whatever you use.

Number 1 Xbox 360 Repair Guide

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.

if its less than a year old phone Microsoft customer support.
if not it could be early signs of 3 red lights

The GPU chip has a bad contact underneath. We can fix this for you.
www.videogamerepairservice.com

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!