Broke Speedmaster 3570.50 during winding

Hello Omega experts,
I tried to find this topic in the archives but I must be very bad at using the search engine (it took me a while to figure it out on Watchuseek) but I'm quite sure that I'm not the first to have done this.........

........I was winding my 3570.50 this morning -- I've had this watch for 1.5 yrs now. I was wearing it yesterday so it was wound yesterday. this morning i went to wind it & had gotten about 30 winds in when I heard a click & then the crown had almost zero resistance to it. And, I noticed the seconds had just stopped dead it its tracks. I wound it a few more times not recognizing what just happened -- i could hear the ratcheting sound as i did the winding motion. Not sure what i was happening (probably nothing) & the seconds hand did not move at.
I changed the time -- the seconds hand moved for a few seconds & then stopped. I could do this a couple times. The third time I did it, no effect on the seconds hand/did not move.

looks like i broke the watch while winding. I'm quite sure that i did not put too much pressure when winding (as I've done this many, many times before). So, I cannot figure out what was different this morning compared to others -- why the watch broke?

from the above symptoms, can anyone tell me what might be broken? Is it fatigue on the parts from repeated winding for 1.5 yrs? It's supposed to be a manual wind watch so it's supposed to be hardy in this department -- crown, crown stem, attachment of crown stem to winding mechanism, etc.
Looks like I need to send it to a repair shop.... 🙁
thanks for the help.

Sorry, forgot to mention — I bought it used. So, it had a prev owner who was the original owner.

thanks for your reply. shoot! I broke the main spring! 😲😬🤬

Stop trying to adjust the time before you cause more damage.

Ok.
Thanks for the replies.

The mainspring broke, you just got unlucky where it broke. I had a pre-moon once where the mainspring broke but it would still run for 30 hours after winding. It's nothing serious and you are highly unlikely to do further damage by playing with the crown.
Your only realistic option is a full service, your watch could be getting on for 20 years old and is probably well overdue a service regardless.

yeah, just my "bad" luck that it broke at this unfortunate location -- arbor end. the seconds hands stopped dead in its tracks because the watch suddenly ran out of power. 🙁
called Nesbits -- $800 + shipping both ways... 🙁

I believe Omega charges $750 + tax if you drop it off a boutique. Of course factory service caveats (polish, etc) apply.

You guys are lucky to have local, independent watch repair personnel. I don’t have any such luck.
If I take it to my AD it will be promptly sent to SGUS in NJ. They’ve worked on my SMP 300 Pro on a few occasions in years past & I think I can do a better job than them & I know nothing about watch repair. I’ve had some drastically bad experiences with them unfortunately.
If not Nesbit’s, I need to find another repair service with known good outcomes. But not SGUS….

Mind if I PM you for contact info if you are also in USA? Thanks.