If you have a DVD player that doesn't work here's what you do, outside your house is a grey or black container with a lid put it in there and then buy a new DVD player
Another one for the Eye unit well I had this Broken DVD player.. I opened it up and I saw this brilliant bright red light and I can’t see anything out of my left Eye now
Insert a disk of the 1984 film Splash and then put the player in your dishwasher. That should clean the lens
Fortunately, the focal distance of the lens focusing the laser in the DVD player is about 1mm . So the beam is so divergent that you can look at it without danger. But basically, the best way to fix an expensive DVD player is to find the cheaper model from the same range and swap the mechanisms over. We always chuckled when we saw that one extreme HiFi company made a £3500 CD player using a Philips CDM7 mechanism, added a lump of granite to it as a 'noise reducer'. It actually played discs worse than the £50 CD players using exactly the same mechanism as the granite lump made the servos work a lot harder.
I still remember back in 1994 downstairs in Comdex Las Vegas, the stand selling CDROMS had a roaring trade in a disc of certain videos. The organisers made them stick a post-it note on the screen and loop the section. The boobies were OK, it was a bit lower down. I was good and bought the CDROM which was the unimaginable 400 megabytes of the Internet Source Code repository at SIMTEL-20 , which would have cost me about £1300 to download dial-up... (still have that disc somewhere)