you might be able to get a little more life out of it if you adjust the pots for the laser pickup and gain.

depending on the model is dependent on where the pots are to adjust.
another thing is the sled for the laser could be out of alignment. thats still fixable but a royal pain. Unless its a SCPH-100x model i wouldnt bother trying to fix that and just replace the laser module.

or start stocking up on spare bare systems