Original post by: Electronics Overhaul ,
Your exact symptoms are unclear. Is the optical drive not feeding the disc, that is, you can’t insert discs? A loose cable can cause that or the blue rollers need to be repositioned including the white rod between them. When you open the Blu-ray drive by the gray cover with gears and springs with three screws holding it with the blue rollers facing you there's a white sliding mechanism on the left side that needs to be pushed forward where you can slide forward and back. You need to push this slider forward. Then, you can push down on the blue rollers, and they’ll naturally lift back up. If the drive is not reading discs, then you need to clean the laser lens with alcohol or replace it. If that doesn't work, then replace the optical drive. The new drive will need your original drive’s PCB as it’s married to the console’s motherboard. If you've narrowed it down to the drive's PCB being bad, check to see if the fuses there are shorted or other faulty components. Last resort is to swap the 128-pin IC chip to a donor board. Sounds like you just need to fix the rollers by your description. Also possible someone could’ve jammed something inside the drive.