I build laser pointers as a hobby, using commerical DVD/bluray burner drives. I physically go inside and remove the diodes. Yes, its cheaper to go to BestBuy and buy a whole retail drive than to buy the diodes seperately.
I have yet to damage any red, violet, IR diodes from ESD. The humidity in my house is below 30% and many times i grab anything metal, I get zapped. Yet, I have never yet blown a laser diode or any other device for that fact. I call bullshit on all the ESD claims. If ESD does kill a diode, it's dead and will never lase again - EVER.
Laser diodes have a limited "burn" lifespan. How often has a normal DVD movie player start to refuse to play certain movies after a few years? Lasers loose light output over time. This is normal for laser diodes.
To read a DVD (360, movie, etc), you need around 5mW of red laser. Manufactures use anything from a 5mW to 35mW laser for most DVD reading drives. Shine a 35mW laser at a disc, and it will not read due to being too powerful. However anything from 5-20mW should reliabably read DVD's /games. The laser should be at around 5mW, but if the calibration data is wrong the laser could be running at 20mW+. If this was the case, the laser could overheat after a while resulting in perment damage to the diode. The lasers (red and IR) in the 360 do not have much heatsinking and can overheat if not set to the proper output.
Were there any laser problems before the liteOn drives? I don't remember seeing people complaining about this problem with benQ, Hitachi, Samsung drives. Just liteons. There are only a handfull of laser diode manufactures in the world, so its VERY possable the same manufacture of the diode in a Samsung/BenQ/Hitachi is the same diode in current liteons. Also are people that have not flashed their liteon drives complaining about laser problems?
Remember when we rip the original F/W from a benQ/Sammy/Hitachi, we are ripping the entire firmware. With liteon drives, most people are not ripping the entire f/w. Is this laser calibration data not being read with a partial rip of the liteon? Is JF properly putting this laser calibration data back properly to modified f/w? There are 2 laser calibration data sectors in the 360 DVD drive - one for the IR laser and one for the red laser. Is one of these calibration data sectors being ignored when reading original f/w? Is one of these calibration data not being injected into the modded f/w using JF?
We have people who flash 30+ liteon drives with no apparent problems, while others who mod 3 liteons have issues with all 3. Bottom line, something is not right. For this reason, I have elected to NOT modify my July 09 360 till this problem is solved.