You Are lucky that it is a pro drive. The pro market products have a longer lifespan than home components. Many lasers are now exticnt and would require looking for an NOS part, always a daunting task.
The latest form of the original Philips transport inside your ML No31.5 is the CD-Pro2 LF and is fully 100% compatible ! * I've received my Philips CD-Pro2 LF (308 euro) from "akustik perfekt" (Germany) * It is another source in Holland but I can't recall right now. * You can try this guy for less money but requires wire transfer only. http://www.diyaudio.com/forums/swap-meet/210983-fs-brand-new-philips-cd-pro2-lf-4.html
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