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    • By Calvin
      Hello guys..
      I wanna ask..
      How to adjust my eta valjoux 7750 movement to be faster..
      Cause it slow 2-3 minute a day..
      Do i just need to move this part to the (+) sign?? Thankyouu

    • By Giuseppe
      Hi,
      in order to buy appropriate spares in my attempt to service an Omega 175.0083 (7750)  I need some advice:
      1.
      I've already been suggested to replace MS:
      Barrel is Ok and I'm thinking of buying a new MS and moebius 8217 for barrel lubricating as I don't want to spend money on recommended Kluber 125 grease.
      Should I consider instead buying a barrel complete (assuming Barrel complete (180.1) comes with MS installed) wich supposedly comes prelubricated ?
      2.
      Attached image shows automatic device bridge with evident sign of wear from where, to my understanding, the problem orginated: a screw came off
      I cant find original part. 
      ETA part is different from Omega in that the Omega is larger and partially covers hammer two function and the chronograph cam.
      Beside that and since the watch has no crystal back case I think those parts are perfectly interchangeable.
      Do I need to replace the bridge or are there alternative aproaches to this problem?
      TIA
      Giuseppe


    • By perfectkyo
      A new 7750 movement, cleaning and assembly again, why watch swing only 260 °?
    • By matabog
      Hello!
      I am servicing my first 7750 (thank you Mark for the YT videos and Lawson for the Disassembly/Assembly walk-through).
      The movement is not new - let's say it has an obscure unknown history  It appears to be a genuine swiss 7750, but with a lower grade finish (very low...)
      When putting back the balance stones I noticed that there were two sizes (two pairs, because the cap stones fit the hole jewel settings). I put the smaller stone and hole-jewel on the mainplate and the larger ones on the balance cock. I tried to but the larger setting on the mainplate but it didn't fit quite right. I believe the springs are the same size - its just the stones that differ a bit (aprox 0.1mm) 
       
      So my question is: did any of you stumbled upon the same issue? Is it normal for a 7750 to have two different stone sizes?
      Thank you!
      Bogdan
    • By johnbiggs
      Hey, guys, I have a 7750 movement where the rotor screw snapped off. I opened it up and it appears the rest of the screw is still inside the rotor post. Is there anything I can do to screw it back out?
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    • Well, this months pick.  
    • Very good work. Happy to see all the pics and your project.
    • New to watches, I would venture a guess.  Since it was behaving as expected for a full 8 days, then started to switch the date incorrectly, would imply something broke, or became misaligned, or loose at day 8.  Obviously I haven’t a clue, but it’s fun to speculate! would appreciate and update when you figure it out.
    • A gold plated champagne dialed  "Kudu" joins the club. This 17 jewel Swiss front loader needed a service, a crown and stem to get it running. It also benefited from a complete valet, and a crystal polishing session. Finding and fitting a suitable stem was the most tricky part, since the original had broken off right at the edge of the base plate, so extracting without stripping it down was a non starter, and finding something to match the broken stub in my "pile of random stems" took a fair bit of scratching around and experimenting. It looks a whole lot nicer in real life than it does in my rather badly lit photograph. The strap was borrowed from an HMT Kohinoor which is hopefully going to be the next patient up on the healing bench.
    • Nice to be a part of the group. I lurked around awhile go. Just finished level 2 of Mark’s course. I’ve been a member of the NAWCC for many years, and taken their onsite pocket watch repair course, and repaired many since. I also restore old clocks, both the case and movement. Picture attached is of a recent restore. This clock is an 1894 Ansonia that was ready for the trash pile.  I am also in the midst of building a skeleton clock from brass stock. I use a Sherline lathe and mill to turn the wheels and cut the teeth. It has been many years in the making, but has taken its first ticks this year. looking forward to more learning and more work on watches. Mark has a great and easy style for learning.  I’m almost finished servicing my first automatic watch I ever bought, a Tissot embedded with an ETA 2824-2. The mainspring just arrived.    
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