Supposedly equivalent manufacturer part numbers:
Samsung DMD panel part #(s): 4719-001997 4719-001985 4719-001999
Mitsubishi " " " " " " " " : 276P595010
Both Sammy and Mitsu claim that their part numbers are synonymous (i.e. as in exactly the same parts) with the following TI DMD: IC-1910-6143W
Here is where confusion comes into play:
...Samsung references these chips within their service manuals as xHD5 (which are widely believed to be part of the DarkChip3 generation).
...Mitsubishi specifically states in their DLP-01 (Sept 2011) service bulletin that they are DarkChip4.
Well, somebody's wrong!
Who is "in the know"? This is rather frustrating.