ok my psp is acting very funny it worked a few hours ago but i was cleaning the screen,after that turned psp back on and the mute icon was on my psp so there was no sound and now theres no sound at all the - and + buttons dont work anymore.the screen brightness button does not work anymore. and when im trying to connet to the net the select button is throwing the letters around back and forth to symbols then letter. no liquid went into the psp when i was cleaning it and last thing my psp cant read UMD and Memory stick reads