Broken Disk Drive?

[Fransexy_]

Hey guys, does anybody know anything about repairing disk drives?
 
I've just tried my Amiga 500 for the first time in a couple years and it's not reading any disks! Sometimes the screen discolours (but the loading light stays on), and others it display messages, such as "volume tp2 has a read/write error" or "error validating disk, disk is unreadable".
I've tried to blow any dust out but it hasn't helped. :confused:
 
Also had a Guru Meditation message, is that a disk virus? Been a while since I did all this!
 
EDIT: should also mention it's louder than I remember, and making slightly weird noises when trying to load the disks - although it's sort of loading a game now, but periodically asking to insert the disk.

Broken CIAs, perhaps?