Speedometer Repair

[deanflyer]

This is the odometer LCD module that is damaged on my bike. I am assuming the mileage is stored within the odometer assembly.


I'm handy with a soldering iron/electronics so was thinking of buying a replacement speedometer assembly, desoldering the lcd unit and then swapping it out with my bad one. Anyone done this? Is the speedo unit easy to strip down?


If you have a unit going cheap, let me know.


Dean

[Gnasher]

This is the odometer LCD module that is damaged on my bike. I am assuming the mileage is stored within the odometer assembly.


I'm handy with a soldering iron/electronics so was thinking of buying a replacement speedometer assembly, desoldering the lcd unit and then swapping it out with my bad one. Anyone done this? Is the speedo unit easy to strip down?


If you have a unit going cheap, let me know.


Dean

Is it just the LCD display that's not working or the speedo to?  It's looks like the water has got in there, as the numerals are still viable so it doesn't look like the LCD has been crushed, sometimes you can dry them out and they work.  Normally they go all black and replacement is the only fix, I'm not aware of anyone selling just the LCD chip, one's I've changed it was the whole unit.  But who knows there might be.

[deanflyer]

Just the LCD, speedometer is fine.

[Gnasher]

Edited my reply look in my first post. 

[deanflyer]

Thanks. Yeah was thinking of buying a whole replacement unit but just swap out the good LCD for the bad, unless I can just pop the entire unit in and it still remembers the mileage?


Dean

[Gnasher]

Thanks. Yeah was thinking of buying a whole replacement unit but just swap out the good LCD for the bad, unless I can just pop the entire unit in and it still remembers the mileage?


Dean

No idea, as mentioned I've not just changed a LCD and I don't know anyone who has.  But I guess it's possible if the memory chip is on the board and not in the LCD. 

[Trebus]

I bet Christian, (username schlumpf) will know the answer. Might be worth a PM.

[deanflyer]

Thanks, have sent him a PM.

[schlumpf]

We already exchanged PMs 
The mileage is stored in a separate IC on the board (93c46 for those familiar). De-soldering is not that easy due to the nearby plastic frame. The data content is allways the same for all bikes, except the mileage. No protection or coding to a specific ECU or key. Yamaha also provided the programming pads (for production purpose) on the bottom. Quite easy to read/write with a proper (simple) programmer.

[deanflyer]

Thanks once again Christian. Nice to know it's an easy fix.