Issue winding my watch with an A2892 movement

[lightdark]

Hi guys, i'm new and do not know much on movement and what is inside of the movement.
Well, recently i got an omega rep with A2892 movement in it and now i could not wind it even when i wind about 20 times.
I believe when i 1st received the watch i can wind it and now i have to shake the watch.

i am not sure, i sense some pin or spring in it is broken or something.
Even though the watch is still working awesome, i still hope i can learn something from here, appreciate anyone guidance on how it works & if something may be wrong i can learn and fix it.

Thanks in advance.

 

[KushBandit]

What exactly is happening when you attempt to wind it? Do you not feel any resistance with the stem? Or is it simply not keeping a power reserve when you wind it?

 

[lightdark]

i think it is like what you mentioned, i cannot feel any resistance with the stem.

As it is now feeling differently from when i wind my watch at the beginning.