I have a Sony gx 300. I have burned several DVD's dvd+R and dvd-R out of 20 dvd's I have burned maybe 5 will lock up this dvd player... the power button will not work/open button does not work. The only way to get the dvd player unlocked is to pull the power. Sometimes I can get to the DVD menu if I press menu real fast but sometimes that will once at the menu screen... if I connect my 30 dollar DVD player to the TV these DVD's work fine.
my question is why would some DVD's of the same brand work fine and others not? Is there a problem with my Sony gx300? if I left something out that would help you give a better answer please ask and I will try my best to provide any additional information.