di2 help
07-09-17, 06:30 PM
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di2 help
I just bought a bike with Ultegra di2 and it appears to be dead. The guy I bought it from thought it should have a charge already but I plugged it in and it still doesn't work. The indicator lights on the junction box are blank and when I hit the shifters to get the lights to show me a level I get nothing.
I checked the charger itself and neither of those indicator lights comes on either. I know the cable from the wall to the transformer is good because is powers other devices when I check it on them. So to me that means that maybe the transformer is bad. However, the guy says it was working fine when he mailed it.
I think I have all the wires plugged in correctly (like in the seat post, etc). If for some reason I do not, could that give me the problems I am having. I also crimped one of the wires (can't remember if it was the one coming from the right shifter, or the left). If I damaged that I would think it could affect the ability to shift that derailleur, but I wouldn't think it would affect the charging capacity (or lights).
Does anyone have any ideas for me to try?
TIA
I checked the charger itself and neither of those indicator lights comes on either. I know the cable from the wall to the transformer is good because is powers other devices when I check it on them. So to me that means that maybe the transformer is bad. However, the guy says it was working fine when he mailed it.
I think I have all the wires plugged in correctly (like in the seat post, etc). If for some reason I do not, could that give me the problems I am having. I also crimped one of the wires (can't remember if it was the one coming from the right shifter, or the left). If I damaged that I would think it could affect the ability to shift that derailleur, but I wouldn't think it would affect the charging capacity (or lights).
Does anyone have any ideas for me to try?
TIA
07-09-17, 06:54 PM
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I have a first generation Di2, and know the new ones are different, but I have had two issues that might help you. You should have some kind of main juncton box or connector up under the handlebar stem. Check that all the cables are plugged in. One day loading the bike in my car, I must have bumped the rear derailleur cable out of place. I had no rear action, and the cable looked like it was attached. I pushed on it and it clicked home. End of problem. Check that any cable on the bike is fully plugged in. Mine has a removable battery for charging, so I don't know about the internal seat post option.
Most rechargeable batteries have a finite lifetime. After some amount if charges , they stop working. You might try a new battery if all else fails. I've had mine for 4 years or so, and it seems fine. Did you ride the bike before you bought it?
Most rechargeable batteries have a finite lifetime. After some amount if charges , they stop working. You might try a new battery if all else fails. I've had mine for 4 years or so, and it seems fine. Did you ride the bike before you bought it?
Last edited by Slightspeed; 07-09-17 at 06:59 PM.
