DVD-ROM Problem (Not Reading)

Hello, I just recently stumbled upon something that is really starting to frusterate me. I have an Hitachi drive with iXtreme 1.5 f/w. Everything has worked fine for about two months and just the other day my drive stopped reading backups completely. It reads originals and dvd's but no longer backups. I use Verb's for my media and have tried cleaning the laser and rails with alcohol.

When I put a backup in it the laser just sits near the center area and move back and forth about 3-4 times and then stops. It is then followed by three clicking noises. All backups have been patched and have worked before. It just stopped recently and I can't get any to work now.

My main question is would this be a pot issue and should I go out and get a multimeter to adjust it or is this possibly something else?

Any help will be greatly appreciated. Thank you.