I have a LiteOn LH-20A1S with firmware 9L09, and lattelly I am getting very unstable burning results.
I am using Verbatim DVD+R 16x MIT, and burning at 12x.
Here are the typical good and bad results:
This results were obtained in the same day, one after the other, with dvd+r from the same box. I have more examples like this, I only have not kept the images for reference.
I have tryed several discs, and it seems the problem is related to the OPC history. If I clean it, the first burned cd is like the good image, the second and all the others next, are like the bad image, or even worse.
I also disabled FHT and OHT options, and even Smart Burn.
I thought I have found the problem, but the last time I have burned a dvd, using the method above, the result was like the bad image.
This is very annoying, because when I burn a dvd, I don't know what will be the result, I have to run a DiscSpeed test after each burn to see if its reliable.
What do you think about it, could it be a defective burner? I have such great results sometimes that make me believe it's not that...