"Trevor Wilson" writes:

**Examine the two circuit boards (new laser and old laser) VERY carefully.
You will probably see a solder blob linking two tracks on the new laser
which is not present on the old laser. The solder blob must be removed for
correct operation.

This may help:

http://www.monacor.de/de/FLE/KSS213C.pdf

That did indeed help. It would have taken me ages to even think of
such a possibility. The player seems ("seems" because I have not put
it through its paces yet) to work now.

Thanks a ton,

/Martin