My brothers Playstation 3 went black after he tried changing the resolution to 720 p....?

May be...

I went to the website:

http://manuals.playstation.net/document/...



And it showed how to change the resolution and any problems that may occur...and I read this...



If the video output settings do not match those required for the TV in use, the screen may go blank when the resolution is changed. The screen should, however, automatically go back to its original resolution after a while. If the screen remains blank for more than 30 seconds, turn off the system. Then touch the power button on the system front for at least five seconds to turn the system on again. The video output settings will automatically be reset to the standard resolution.



Well, we tried that and it didn't work...The screen is still blank...



Is it screwed permanently?

I very much doubt that it's permanently damaged. It sounds like your brother accidentally changed the picture quality to one that is not supported at all by the television. If he tried to set up the console using a 720 p picture, then I am assuming he used a high definition chord (HDMI), right? If that's the case, then do the rebooting process like you just read about (because that is the correct way to troubleshoot the console) and then plug the original, standard AV plugs back into the console. That should make it work. If he wasn't using an HDMI cable and he set up the 720 p, then it's more likely that you may have damaged the PlayStation 3 since that's not supposed to be an available option without an HDMI cable. If you can't figure out exactly what to do, try contacting Sony America who will be more than happy to help you with this.