Vintage Dual 1228 Turntable : worth to upgrade cartridge ?

I bought my 1228 new in the stone age, early 1970s but it sat unused since moving to CDs in the late 80s. Set it up again with my son who's gotten into vinyl, spun 2 albums and it no longer turns. Any thoughts as to whether repairing is worth the cost and if so where in NYC or surroundings I might go. Thank you.

Sorry for the late reply, I wasn't able to complete the process and set up my Dual 1228 correctly until just recently. Thank you so much for all your excellent advice Radni and Cliffkhz. I opted to send it to Bill at fixmydual.com, where it only needed to be cleaned and lubed, just as you thought. Bill was great, also checked my cartridges and found that one stylus was bad and suggested a nice replacement. He then guided me patiently and kindly in setting it up properly when I hit a roadblock. I have now been listening to my old vinyl for 2 weeks and can't get enough! The sheer musicality on good recordings is amazing, so much so that the rare pops that bothered me eons ago and hastened my switch to digital are barely even noticed now. The very slightly smaller dynamic range of analog and more frequent intermissions' needed to flip the LPs on symphonic works or operas do make listening slightly disjointed, but for most rock, blues, folk and jazz are not issues at all. It is really fantastic to have the wonderful analog sound of vinyl back, all thanks to you and Bill!

Thanks Radni, that's exactly what I did, replaced the stylus with a JICO. Looked into NOS, shocked at the prices, so went with JICO. So grateful for all the helpful advice from the community here.