Xbox 360 no power

[SSGM4DCOW]

I took apart my xbox 360 to Mod it. as i was setting up everything and turned on the console to see if it would work i got the red ring. problem is, thers no power going to the main board. just to the lights to make the red ring. Any ideas how to at least get power back to board??

Now the red ring dont even come on i just have the PSU light turn red but it works fine with my other 360.

[Karbon Killa]

Got a question for you. Did you take the heat sinks off? If so did you re use the X-clamps? If not than you more likely than not tightened the bolts down for the cpu and gpu too tight. I had the same problem when I was trying to fix my RRoD problem on my first 360. All you have to do in that case is loosen the bolts for the heatsinks about half a turn, and then you should be fine. Don't forget to plug your fan back in, lol.

[Luke122]

Make sure your AV connector is seated properly also. In fact, pull all the plugs, and reseat them all. Also, +1 on check the fan connector. :)