Double check the capacitors in the power supply. I've known them to fail and cause the player to stop reading the disks.
They all look fine, no swelling or signs of leaking from any capacitors.
That leaves the laser or the drive belt.
@lynx started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Double check the capacitors in the power supply. I've known them to fail and cause the player to stop reading the disks.