its funny how everyone says that STNG has lots of points of failure etc and is a bitch to work on, cause my 2 next gens have never had an issue ever, and a few mates who have them have had years of playing without any hickups. 

i think maybe operators back in the day did hack repairs to a few here n there and its probably led to the machines getting a bad rap with so many opto's.

beaky (andrew) stripped mine down for a great polish/detail quicker than a hooker grabbing a hundred buck note on a slow day. 

i guess i have been lucky with mine. Live long and prosper.lol