Bbso1 stopped working

[flik9999]

Hey so my bbso1 has stopped working. I have voltage tested the cables from the battery.

When I connect the battery and turn it on the hub shudders and the chainring moves slightly forward but there is no life from the control pad.

Any ideas what this might be?

 

[Nealh]

If no power to the lcd usually means a controller fault, some times the hall wire block connector has mating issue and can back out a little so you have to remove the controller to look.
It is often gunged with white silicone so needs unplugging and silicone cleaned away and then refitted to rule it out.