KLH is a speaker company.
I'm guessing they are just slapping thier name on a DVD player made by some noname Chineese or South Korean company.
Are you sure the player is properly hooked up, try using a different disc and see if that makes a difference.
Very few electronic items have warranties that are good for over a year, it dosent matter that the item was not used in that time period.
Their web site has contact information for out of warranty service
Oh yea I'm not affiliated with any corporation I mentioned here