I have been trying to understand why some users have serious problems with their 5005 series machines while others don't. The most serious problem tends to be described as "won't recognize media", "disk fail message" or "won't finalize". Several members of this forum have experimented with replacement of the DDW series drive with a "stock PC DVD burner". As best as I can determine, this replacement has solved the "drive related" problem 100% of the time.
I wondered why I have had relatively minor problems. So I started analyzing alot of the postings in this forum and thought I would post what the data seem to imply.
First, there are at least 3 distinct drive models being used in the 5005 series machines.
DDW411s - designated as F2SC in the internal serial number.
DDW451s - designated as G2BD in the internal serial number.
DDW813s - designated as either B205 or B208 in the internal serial number.
The difference between B205 and B208 is as follows.
B205 is the DDW813s drive before implementing drive FW update.
B208 is the DDW813s drive after implementing the drive FW update file.
From what I can tell.
DDW813s (B208) drives seem to have the most problems.
DDW813s (B205) seem to have some problems.
DDW451s (G2BD) appear to have some problems but less than the 813s drives.
DDW411s (F2SC) drives have some reported problems but are not as common as the others.
This is not scientific. There are a lot of problems reported in this forum where the drive model is not identified. If a large portion of these problems were DDW411s drives, then none of the above makes sense. It could also be that many more units were manufactured with the 8x drives. But very few people seem to be troublefree with a DDW813s (B208) drive. Many of these same folks had minimal problems when their drive was listed as (B205).
The mainboards in the units could also be related since again there are different versions reports. Some 5005 have boards marked 5001, 5005A, 5005B and 5006A. But this does not explain why the problems seem to disappear when a PC drive is instaled. Unless it takes time for the mainboard to "wearout" the drive.
I would be interested to here from users that have the different drives to see if my logic holds up. Also are their other drive models or variants involved that I have not identified.
Finally, this is clearly a problem Liteon needs to address. They should be supplying tools for users to troubleshoot their drives, backup FW and revert drives and systems back to earlier FW versions. If none of that works, they should have a drive replacement program established similar to how the hard drive manufacturers have addressed the issue. You run the diagnostics, get a code and then everyone knows if there is or isn't a problem.