This instructable shows you how to open up your dreamcast and adjust a small potentiometer to adjust the power going to the laser. this is pretty simpe requires no special tools or knowledge of electronic repair, it only requires a careful hand an common seance.
I recently bought a dreamcast off ebay, then a friend gave me a free one...isn't that usually how it works heh. so i went to cleaning the dreamcast and went to test the free dream cast and sure enough it wouldn't read any discs. so i went to looking around and only found a couple of helpfully videos on this subject but no instructables on the issue, so i decided to make one so some one can revive an old dreamcast instead of tossing it out
NOW FEATURED ON HACK A DAY http://hackaday.com/2011/03/07/simple-fixes-breathe-new-life-into-aging-game-consoles/
Step 1: WARNING PROCEED AT YOUR OWN RISK
I just want to make it clear that i am in no way responsible if you some how break your dreamcast or electrocute yourself