Strongly recomended repace the main drive motor.
for about 5 bucks or less, the drive moters arnt
that good and weare out fast, the dvd or cd
must spin at a certain rpm on the start up
or claims there is no disc, proud owner 7 years
the lasers are good. ive never used any liquids
on cleaning the laser ive owned 3 and have had
1 of the 3 for 7 years. its always been the drive motor

You will need to remove the cover and clean the laser eye with rubbing alcohol and cotton swab (q-tip)