That really isn't bad advice. But, if you are interested in moving forward with repairs...
1.) Not to be lazy, but there are quite a few threads on this... type in "CD50 laser" in the search box on this site. In general, it seems that the laser is fairly robust and the fault may well be elsewhere -motor? There are plenty of folks on here that have been through the CD50. If you are inclined to repair it yourself, then sit tight and the thread may pick up
2.) If you'd rather just send it off... from your locale, I would recommend either Atlantic Systems in MA or Modular Electronics in GA.