Platter will not spin....

Um, why did you clean off the magnet with rubbing alcohol? Is this other DJ a service technician? Please be cautious when taking advice from friends or colleagues. Consult a professional, otherwise, you might cause more damage to your unit. Now, on to the problem at hand... This is a common problem with the MK2's, and not a power issue. This is a drive issue, and you will need to get it professionally serviced by an authorized Pansonic/Technics service center. There are various components which control the drive of the MK2's, so it's not easy to determine which is the culprit. 95% of the time it's one of the IC's (integrated circuits) or a few, or all. Which is why you will need to take to a service tech to get it looked at... Now, I know that's easier said then done, as many service centers do not provide support for turntables, especially the 1200s. So make sure you ask if they are knowledgeable with the Technics SL1200MK2 series. A lot of times, many of these places will be factory authorized to repair Technics/Panasonic items, but none have ever seen a Technics SL1200MK2 turntable, or worked on a direct drive unit. Many work on CD Players, Cassette Decks, etc. Our company offers free return shipping for all Nationwide service, and if your in NYC, we offer free pick up. Oh, and we are masters with the 1200s. Unfortunately, I don't think we can post our company information here, as I do not want to violate any agreements. So, with that said, do a search using the REPAIR SERVICE search option in FIXYA.com and go to the following section-> HOME AUDIO -> Audio Shelf Systems - we are listed.