stock rosen dvd system help!!!!

[Scooter]

I have a 2004 yukon xl with a Rosen DVD system. The DVD player is mounted under the driver side passenger seat. My son spilled a drink and it has quit working. I took the cover off and cleaned it out inside. It worked for about an hour and now it cuts on and turns right back off. Has anyone else had these problems and how can i fix or replace this? Is there somewhere to send this to be repaired or does anyone know where i might purchase one, anyone who has upgraded want to sell? please help if you can

thanks,