Nesman. Please, how do you do that? This is the second time I've heard that. You're talking to a rookie. What's involved?
All right, well if your laser is having problems reading your games the first course of action is to clean the laser and game disk. If you have already cleaned the laser and disk and are still having problems the next step is to increase the laser voltage. Because in the early models, after time the laser would become weak and would be too weak to read the disk information. That's when you can increase voltage as a temporary fix. Because if you have to do this, it means your laser is dying anyway and sooner or later you'll need a new one.
Step 1 Remove the gamecube case, the fan and then lift up CD assembly
Step 2 Remove the metal shielding from the underside, held on by tiny screws.
Step 3 Look at the underside of the circuit board and locate the tiny voltage control.
Step 4 Take a small Phillips head screwdriver and turn it a tiny bit clockwise. Don't turn it a lot or you will give it too much voltage. Just enough so it reads games.
Step 5 TEST: Do this by reassembling the gamecube without placing any screws back in yet. Plug it in and test. If it works, you've done it. If not, you may have to increase the voltage a little more.
Step 6 Of none of this worked, and you adjusted the voltage control more then 30% of one full turn then your laser is shot and you must get a new one.
If it worked, then get your screws and put your gamecube back together the same way you took it apart.