Hamilton Ventura Skeleton Overhaul – Professional Watch Service in Geneva
This striking Hamilton Ventura Skeleton automatic watch arrived at our Geneva watchmaking workshop for a complete mechanical service.
The client reported irregular timekeeping and reduced performance.
An initial Witschi timing test and full technical inspection were carried out to accurately assess the condition of the movement and internal components.
Due to visible wear and degraded lubrication, a full mechanical overhaul was required to restore precision and reliability.
⭐️ Initial Diagnosis
During the intake inspection, several issues were identified:
Insufficient Mechanical Performance
- Low amplitude for an automatic movement
- Unstable rate in multiple positions
- Excessive daily deviation
Internal Movement Wear
- Aged and partially dried lubricants
- Micro-contamination inside the gear train
- Visible wear on intermediate wheels
- Abnormal play on a transmission axis
Several components required replacement, including transmission wheels and specific movement screws.
Lack of Recent Servicing
No evidence of recent maintenance was found, explaining the accumulation of internal friction.
These findings made a complete mechanical service in Geneva absolutely necessary.
⭐️ Work Performed in Our Geneva Watchmaking Workshop
Our watchmakers carried out a full restoration following Swiss horological standards.
✔️ Complete Movement Disassembly
Each component was individually separated, inspected, and catalogued.
✔️ Professional Ultrasonic Cleaning
- Removal of oxidation
- Elimination of old oils
- Deep cleaning of jewels and pivots
✔️ Replacement of Worn Components
- New transmission wheels
- Original-specification screws
✔️ Technical Lubrication
Specialized oils applied to:
- Barrel
- Gear train
- Escapement
- Pallet fork
- Balance assembly
✔️ Precision Adjustment
- Amplitude correction
- Isochronism optimization
- Fine regulation of the hairspring
- Multi-position timing adjustment
✔️ Reassembly and Final Inspection
- Complete reassembly
- Hand alignment
- Case aesthetic verification
✔️ Final Witschi Timing Test
Electronic timing control performed to confirm stable accuracy across positions.
Results After Full Service
After intervention:
✅ Restored amplitude
✅ Stable timekeeping
✅ Significantly improved accuracy
✅ Smooth power transmission
✅ Perfectly lubricated movement
✅ Silent operation
✅ Case aesthetics preserved
This Hamilton Ventura Skeleton is now fully operational, ready for many years of reliable use.
⭐️ Possible Causes of the Issues Encountered
Why did this watch lose performance?
- Natural aging of lubricants (after 4–5 years)
- Daily micro-shocks
- Internal dust accumulation
- Lack of periodic servicing
- Prolonged friction on non-lubricated components
Without regular maintenance, a mechanical movement wears prematurely — even on high-end watches.
⭐️ Watchmaker Recommendations
To preserve your mechanical watch:
✔️ Complete overhaul every 4 to 5 years
✔️ Annual precision check
✔️ Avoid shocks and vibrations
✔️ Do not expose to moisture
✔️ Gentle and regular winding
Your Watchmaking Workshop in Geneva – Mechanical Watch Repair & Overhaul
Our Geneva watchmaking workshop offers:
✔️Complete mechanical watch service
✔️Automatic watch overhaul
✔️Witschi diagnostic timing analysis
✔️Swiss movement restoration
Each watch is handled individually with rigor, transparency, and true artisanal expertise.
Conclusion
Your Hamilton Deserves Exceptional Care
Thanks to our horological expertise in Geneva, this Ventura Skeleton received a full professional service performed to the highest Swiss watchmaking standards.
Every step — from initial diagnosis to final regulation — was completed with precision to ensure reliability, longevity, and optimal movement performance.
For any watch repair in Geneva, full service, or mechanical watch overhaul in Geneva, our watchmaking workshop welcomes you by appointment for personalized, professional care.
