Date Just does not hold the charge

[moa]

Hello everyone, I ask for help once again thanks to your expertise.

I have a date just, I don't know what movement it is. The winding from the crown works, by turning the rotor manually the gears highlighted with a red dot turn.
Problem: in the evening I take the watch off my wrist, in the morning I find it stopped.
Can you help me solve it? Thanks!
A few photos

 

[316lad]

When you manually turn the Rotor does it move silky smooth all the way round?
If you put just a tiny little bit of pressure on the outer edge is it catching on any part of the movement restricting it's rotation? like a scew head that has come a little loose or something?

 

[moa]

I'm trying it now as I write. In fact if I push the rotor towards the outer edge, the small gear does not turn. The rotor is very loose

 

[316lad]

I'm trying it now as I write. In fact if I push the rotor towards the outer edge, the small gear does not turn. The rotor is very loose

Ok. So, if you're feeling confident just tighten up the rotor - I suspect the fact that it's loose means it's "crashing" the top surface of the movement and thus not widing the watch very effeciently.
Do NOT overtighten it - tighten just to the point the screw feels firm.

 

[moa]

Ok. So, if you're feeling confident just tighten up the rotor - I suspect the fact that it's loose means it's "crashing" the top surface of the movement and thus not widing the watch very effeciently.
Do NOT overtighten it - tighten just to the point the screw feels firm.

Done. One micro turn. The rotor still remains loose

 

[316lad]

Does it now revolve correctly and wind the ratchet wheel?

 

[moa]

Does it now revolve correctly and wind the ratchet wheel?

What is the ratchet wheel?

 

[316lad]

When you now manually turn the rotor through 360 degrees are the two wheels you highlighted in red above moving freely?

 

[moa]

When you now manually turn the rotor through 360 degrees are the two wheels you highlighted in red above moving freely?

Yes, now even if I press the rotor on the sides they spin freely. Both clockwise and counterclockwise.

 

[316lad]

Put the watch back together then - you've fixed it!
Well done you!

 

[moa]

Wow! I'm posting the photo I just took with the chronocomparator! Tell me what you think?

 

[316lad]

That looks fine. I wouldn't try nd improve on that too much.

Do bear in mind the power reserve on those movements is pretty poor. e.g: not very long - so if you're not wearing the watch all day - or even if you are and just not moving about very much - it will probably lack enough wind to go through the night.
If you want to wake up each morning and find it merrily ticking away then give a few winds (maybe 15-20 or so) at night.

 

[themaxx25]

What factory is that watch from?

 

[moa]

That looks fine. I wouldn't try nd improve on that too much.

Do bear in mind the power reserve on those movements is pretty poor. e.g: not very long - so if you're not wearing the watch all day - or even if you are and just not moving about very much - it will probably lack enough wind to go through the night.
If you want to wake up each morning and find it merrily ticking away then give a few winds (maybe 15-20 or so) at night.

Thank you so much for everything! I'll keep you posted on how it works.

 

[moa]

What factory is that watch from?

I dont know, i buy it on the road...

 

[TESLA760]

What factory is that watch from?

Looks like an entry level watch.

 

[Feefo]

Cheap low beat movement, never seen one with the balance cock on that side.

 

[316lad]

Cheap low beat movement, never seen one with the balance cock on that side.

An obscure iteration of the Epson YN55 - see them here and there.

 

[themaxx25]

Looks like an entry level watch.

Cheap low beat movement, never seen one with the balance cock on that side.

I was thinking the same thing!

 

[moa]

Cheap low beat movement, never seen one with the balance cock on that side.

you're right. I had to turn the magnifying glass upside down to adjust the time!