See, I have this unit here in my office for more than a year now. This is the unit of a friend and I told him I'll look into it, which I never did, until now.
His complaint is it cannot read CDs anymore. So I plugged the unit in, and played one of the CDs given to me by @superman, it did play and I am using headphones to listen. The sound waned, and I noticed that the tubes' filaments are no longer glowing. The transport and the display is still working though.
If anybody has any links to a service manual, I'd appreciate it. Maybe this is the kick in the butt I need to get back to DIY, and maybe, just maybe I'd buy this Shanling instead