^ I have an SL1700 as well. It's the original though not a MKII. Both fine decks, quite similar to the SL1200 DJing deck but with lower torque.
Hey, nice to meet another 1700 user!
Unfortunately mine is having problems right now, i've burnt out a compnent on the printed circuit board or something, it only plays at 45rpm right now. It's not mechanical for sure as the 45 setting works no problem.
Taking it to a repair specialist is likely going to cost as much as buying another one though, I only paid £70 for mine, so i'm mulling over simply buying another off ebay and keeping mine for spares, or perhaps switching the whole PCB from the new one into mine, as I am rather attached to it, even though the new one would be exactly the same.
Alternatively I can learn to become an electronics expert, trace the fault, buy the compenent and fix it myself, i'm liking that option less. Although tracing faults is something i've been meaning to learn how to do.