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Join Date: Nov 2013
Location: Salem, Oregon, United States, Earth
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I'm late to the party but I had a similar experience. My first step in reading issues is to clean the disc and use a cleaning disc in the Blu-ray player that was designed for cleaning Blu-ray players, so all that follows is for read issues after a fresh cleaning of both the player and the disc. In my case, I had an LG Blu-ray player that, after a couple years of frequent use, had issues with a few Blu-ray discs from Netflix, and then more and more Blu-ray discs had issues playing, but never DVDs. I took the Blu-ray player back to Best Buy and, under the extend service plan they replaced the laser/drive assembly, and then it worked great for another one and a half years before it started having issues again, this time after the extended service plan had expired. That is when I purchased the Sony BDP-S3100 Player and every Blu-ray disc the LG had issues with worked fine in the Sony. I kept the LG around for playing DVDs but finally ended up just tossing it.
It was in those times I did some reading up on the issue. Some sites stated that there are multiple lasers in the assembly: a "blue" (violet) laser for reading Blu-ray discs, a red laser for DVDs, and an IR laser for CDs. The "blue" laser loses its brightness with use quicker than the other lasers and over time the player will have more and more difficulties reading Blu-ray discs. One site claimed that the physical tolerances of reading Blu-ray discs was tighter and it takes less wear to cause the drive mechanism to not properly track the pits, but DVDs and CDs use longer wavelengths and larger pits and can tolerate more wear in the drive mechanism. All sites I read seemed to be in agreement that the failure mode generally starts with just a few Blu-ray discs that could not be read, most frequently at load time, and over time more and more Blu-ray discs cannot be read, but usually there is no trouble with DVDs.
As far as allowing the disc to access the Internet, I had paid extra for BD Live when I purchased the LG, but 99% of the time the BD Live content available were additional trailers, not what we would consider "special features" (commentaries, behind the scenes, how certain affects were achieved), so I ended up disabling BD Live and many Blu-ray discs load faster, and not one of the discs I had rented from Netflix failed to play, but a couple discs did warn me of no BD Live but allowed me to continue. Still, having an Internet-connected player, even with BD Live disabled, makes it a whole lot more convenient for updating the player's software, which sometimes is needed with a new release of some Blu-ray discs.