Di2 not responding troubleshooting My bike was on the trainer for a couple weeks.

One morning, Di2 stopped responding.


No shifting 
No light at junction box at all
charger doesn't light up orange when plugged in
etube doesn't detect anything.


Tried different battery, same issue.

Tried different A junction box, same issue.

Tried plugging the battery straight to the A junction box with the charger only, no activity either.

I'm running out of ideas!

Let me know if you have a potential solution.

Cheers

EDIT :
I'm suspecting the charger not working and the batteries being flat.
No lights showing on the charger at any time and not detected by my laptop when I plug it in.
I've borrowed a charger from a bike shop nearby and it was my charger that was dead.

Not sure how the battery drained itself completely in the first place but I charged the system and it came back to life.

Underneath the charger, there is the production date and mine was from 04/2013 so it's quite old and could have just died.