I have a TR1 and a TR3AP. The cameras on both work just fine. I have had both for about 3 years (the TR1 in December 03, and the TR3 in May 04 just under), and I got both used, so they both have been in use more than 3 years.
Maybe I am just lucky, but besides having to replace a worn out battery, they have been tough as nails, and I use the TR3 everyday as my sole computer (technically I traded the TR1 to my mother); I travel to and from school with it everyday. I don’t put it in a case and I leave it in my car in extreme weather all the time. I am basically as rough and abusive as can be towards it. Plus, since I got them used, no warranty.