I have a brand new ETA 955.412 movement replacing another with stem damage. With the following steps:
Place minute/hour wheel.
Place front plate and secure.
Place hands (pressed on easily).
Inserted new battery.
Ensured crown is pushed fully home.
Trouble is, it doesn't function at all. My first thought is I messed it up somehow! Whilst I'm no watchmaker, my day job is engineer so I'd like to figure it out (if the movement was not bust from purchase).
What I've checked is:
Changing time with crown works perfectly.
Date changing functions perfectly.
New battery (voltage 1.58V) measured at chip.
Coil measures 1.5k ohm.
Current draw of around ~2uA.
I'd be grateful for any advice!
Hmmm. We’ve all had that happen. The movement isn’t securely attached to the dial and when the movement moves outward at all, the dial pulls the hands off. You will have to remove the movement/dial once you get the stem out. Then you can reattach the hands. Look into that oblong hole to the right side of the stem in your photo. Watch inside it when you pull the stem in and out and you should see a tiny lever with a really tiny hole in it moving back and forth. There even may be an arrow on the movement pointing toward that hole. When you see the lever plainly and see the hole in it, put a toothpick tip or tiny screwdriver tip and apply a little pressure there. Then the stem should slip right out. That hole sometimes appears when the stem is pulled in the setting position, sometimes in the normal position. That’s why you have to pull the stem in and out to see when it appears. After you get everything out, you can fit the hands back in place, noting the proper position for their placement so they line up properly. Hour hand on an hour marker and minute hand at 12. Seconds should be at 12 when the minute hand is on a minute marker. At least you don’t have the added complication of a date. Good luck. Steve
First time watch repairer here. My Tokyobay watch shown in the photo below needed a new battery. So I got the new battery, popped open the back, and popped out the old battery. Unfortunately, somehow while this was going on, I caused the minute hand and the other small hand (not sure it's purpose) to fall off! And I have no idea how to fix this (though very happy to try anything).
The inside of this is a Miyota IL45 and I assumed the first thing I'd need to do is get the stem disconnected from the movement. I tried pushing a pin in some of the holes and gently tugging on the crown/stem to get it out. But it didn't work and I have no idea where the release is. So that would be the first step I think...
After that, I don't know how to get at the hands to put them back in place. So that's the harder step two.
Would very much appreciate any help on this. From what I can tell, this watch doesn't seem to be very repairable. But hoping you guys can guide me!
Update: so i cleaned the watch completely and replaced the mainspring with one that i had. Had to anneal the end and bend in over to catch the barrel hook.
I then examined the jewels and found one badly damaged jewel and two other cracked jewels (fix later). Then i noticed that a tooth on the center wheel was bent completely over. I wedged in a knife and was able to move the tooth back without breaking. Lots of work remaining on this old beast.