I replaced the chrono wheel for another one and... the same. Movement stucks but in the other seconds hand position. I have no idea. When chrono is off and clutch is on everythings is ok. It's strange - usually it is going other way - stops when chrono off.
I inspected all wheels, cleaned them one more time by rodico and got them bath in aceton. No result
Heading my way on the slow boat from Mumbai, is this little number.
It made it into the club with an exact 404 bid with free shipping. I suspect it may have a French designed Lorsa P62 in it, but given its source, you just never know.
There is an interesting thread about the brand here -> https://forums.watchuseek.com/f11/took-chance-indian-timestar-nos-comments-welcome-699648.html
Here is a brief summary.
This approach is unconventional. I would apply penetrating oil, let soak over night and;
Release the power at the click.
Remove rotor and winder module.
Remove the ratchet and crown wheel.
You would get somewhat better access to apply penetrating oil to the set lever screw, let soak for a night or two, attack the screw. Avoid excessive oiling.
You would expectedly discover rusted parts underneath, best to be prepared for complete overhaul.