Sat Nav DVD Drive

[manca]

Hi all
Looking at options. My unit has never read copy discs for more then a few weeks but never had any issues reading the original disc. Having recently tried a newer original Audi disc which it failed to read after a few days I'm now having problems with the original disc. I've used a recommended lense cleaner to no avail.
From what I can see a replacement unit would need CP to be done and might fail anyway like the first. Has anyone had theirs refurbed. I've been into a local car audio place and they weren't interested and mumbled about problems while it was off the car. Anyone sent theirs for repair!?
I imagine I could source a replacement laser (I'm sure a few months back I saw a link to one somewhere).
In the evenings after a couple of light ales I'm talking myself into pulling it apart myself. At the moment I'm clear headed enough the following morning to leave well alone. Has anyone repaired their own?