Hi there. a few years ago i purchased a portable screen w/ built in speakers for my brother's sony playstation 2. it worked fine and everything was good until one day i went to plug it in to the wall and i hear a loud buzzing emitting from the speakers. i quickly unplugged it. i later realized that i had used the wrong power supply plug. (those big 3 inch by 2 inch box things that you plug in, instead of a normal male plug-in.) anyways, i found the correct one, and plugged it in, and there was no buzzing. but... to my dismay, their was sound, but no video. so apparently i burnt out the screen or something when i did that. does anyone know what i may have done? once thats figured out, i would like to try and repair it. if you need pictures ot more info i would be happy to share.
thanks