i have a small 19in crt samsung. today i was watching tv and the screen started to dim. the picture started getting darker and darker until i could nt see anything anymore. it looked like the tv was off. but i could still hear the sound perfectly. i turned off the tv and back on nothing happend. i turned it off for like an hour then back on and it worked fine for like 40 mins and did the samething again. i was wondering what could the problem be??