my dvd player wont show a blue screen on my tv. ive checked to make sure its all hooked up and it is but when i turn it on nothing happens. the converter is hooked up right and its plugged on along with the dvd player. when i turn on the dvd player all my channels to turn to static and no blue screen appears on any channel. it worked find last time i use it but now it wont. what should i do? thanks.