IMO more than likely it ain't the laser assembly. Unless you get the 'works' right, no point of buying a laser assembly.
inside is not rocket science, just a mechanism to get disc into position for the laser
take case off, have a look, press buttons, watch, get familiar with it's actions.
see what might slip or not slip when it should/shouldn't
clean old lube off, put new lube,
clean pully, clean belt, new belt?
I bet you can get it going yourself. At least have a look before you pay someone else or give up.
inside is not rocket science, just a mechanism to get disc into position for the laser
take case off, have a look, press buttons, watch, get familiar with it's actions.
see what might slip or not slip when it should/shouldn't
clean old lube off, put new lube,
clean pully, clean belt, new belt?
I bet you can get it going yourself. At least have a look before you pay someone else or give up.