you can try a lens cleaner, perhaps get lucky,
the lasers weaken with use, not age, finding the SACD layer is the 1st to go, so if buying a used player, try to find one sold by the prior owner who knows how much use it got. Mine came out of the seller’s second system, very little use he said, I chose to trust him, it arrived looking new inside and out, has been working perfectly for years.
I may be fooling myself, but I keep this in my ebay watch list, thinking I could be successful replacing an entire assembly, not the individual laser.
I bought and replaced a laser on a Marantz, it’s tricky, I’m handy, and I was able to melt the static protection blob, install it, get the CD layer found, but never got it’s position refined with height adjustment screws to find the SACD layer.

