I know I’ve seen at least two kinds of replacement laser lenses for the Dreamcast.
Here’s one up on e-Bay at the moment ==> SPU3200 16 PIN SANYO OPTICA LASER PARA SEGA DREAMCAST | eBay
There’s another brand, too. It has the label number R48.
I have a Dreamcast that will boot up and it does seem to turn GD-ROM’s but will not read them leading me to believe this is a laser lens issue… probably aggravated by a Homebrew CD I made and used a few years back. In the meantime, I have a backup DC I use. The Homebrew CD has been permanently retired!
I am wondering if either of the two replacement laser lenses works with the Dreamcast.
I am somewhat wary of the fact that this is a Sanyo part… some unpleasant experiences with their electronics in the past. Not a quality electronics manufacturer (ie, don’t expect their stuff to last longer than 4 years, max) IMHO.