15400 Trouble
I was on a cruise & in Europe over 3 weeks with 15400 on. Looked got, got a lot of appreciative comments & worked well and then it just stopped. Well, so I gave it a shake and it started but this has happened thrice now over a week. I also noted t...
Date change problem?
Hi there, If there is a problem with date change mechanism(not changing smoothly or jumps1.5 or 2 days) either manual hand advance, quick date function or by movement itself, it has got a problem with internal date driver wheel which happens quite often a...
Oil Change
Hi Mally The Cal. 3120 inside Royal Oak 15400 has 60 hours of power reserve when fully wound. From what you just described, it seems there is nothing wrong with the watch since the watch is working properly when you manually wind it. From my past experien...
Move it to the wrist you use most
If you are right handed try it on your right wrist for a few days and see if it winds better. Or your beer glass lifting hand. I’ve had this happen with a couple watches - and yes, sadly for me, it took a service to solve. Or stop caring and just wind it,...
I don‘t think that the malfunction depends on the daily activities of the wearer.
The movement of the 15400 is inside my ROO 15707 CE (four years old, serviced by AP in Nov. 2018) as well. In February this year - after days full of activities - it stopped working only about half an hour after I had laid the watch down for the night. Th...
Frequet serving needed
The movement might look robust, oil sinks are very small and can not apply sufficient oil in jewels for 3120&3126 and so frequent servicing will be necessary to sustain watch functions and parts quality are also not that good according to my local repaire...