Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

di2 help

Old 07-09-17, 06:30 PM
  #1  
jlawson58
Newbie
Thread Starter
 
Join Date: Jul 2017
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
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
jlawson58 is offline  
Old 07-09-17, 06:54 PM
  #2  
Slightspeed
Senior Member
 
Slightspeed's Avatar
 
Join Date: Apr 2017
Location: Los Angeles, CA
Posts: 2,213

Bikes: 1964 Legnano Roma Olympiade, 1973 Raleigh Super Course, 1978 Raleigh Super Course, 1978 Peugeot PR10, 2002 Specialized Allez, 2007 Specialized Roubaix, 2013 Culprit Croz Blade

Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
Quoted: 723 Post(s)
Liked 706 Times in 381 Posts
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?

Last edited by Slightspeed; 07-09-17 at 06:59 PM.
Slightspeed is offline  
Old 07-10-17, 10:20 PM
  #3  
jlawson58
Newbie
Thread Starter
 
Join Date: Jul 2017
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
still no luck

Thanks, but that is the first thing that I checked. I am at a loss.
jlawson58 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
acrafton
Bicycle Mechanics
16
01-08-21 03:29 PM
acrafton
Bicycle Mechanics
8
08-25-19 06:18 AM
PMike
Bicycle Mechanics
16
11-04-18 08:34 PM
huskie69
Road Cycling
4
05-08-17 01:59 AM
slcpowderhound
Bicycle Mechanics
3
09-04-16 08:20 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.