The tray on my LiteOn DVD recorder model LVW 5005x will not open consistently.
When the tray does open, I cannot burn DVD's in + or - format. I can burn CD format.
I beleive I have the latest firmware.
There are different lasers in your recorder for burning dvds vs cds. It may be that the dvd laser is malfunctioning. It is probably time for a replacement or repair.