This is my first post here, so be nice and gentle

The problem:
Got my used cdi 220 /60 unit today and it is in pristine condition, but when i try to play some cdi's it stalls more or less on the same part. The drive keeps spinning the cd and when it freezes the movie, the lens makes a sound like it's trying to focus.
What should i do to the thingie?
Judging by the posts reporting problems with 220 units, well... ii've got something to entertain myself... I'm a proud owner of a good looking problem...
Any help is appreciated. Please don't tell me to go buy a new laser that costs 100$ plus 50$ of p&p.
Thanks