I once run in same issue, I replaced with the kit and the machine still earning money 6 years on, Tacho Universal V2008.01 Update& Repair Kit Never Locked

This repair kit can repair the following troubles:

- Screen display: Diga update
-Screen display: RESET
- No display after powered on
- No vehicle list, screen display black strip
- Frequently Halting
- Screen display
- update handheld
Package Included
- Chip IC111 1pc
- Chip IC112 1pc
- Chip AT24C02 1pc
- Chip 74HC541 1pc
- Crystal oscillator 1pc
- User manual CD 1pc
- Removing tool 1pc