Controller issue

Aug 7, 2017
7
0
1
40
Shropshire
#1
hi guys
Ive done something daft ive managed to get the polarity wrong on a batribike granite live and earth wrong way round i heard the controller pop any ideas what it need to check /change in the controller

Any help appreciated
 

Nealh

Pedelecer
Aug 7, 2014
6,090
120
113
55
West Sx RH
#2
Pop, Oh dear :(. Most certainly a can (capacitor) has blown, usually identified at the time by a cordite type smell. It may be possible to solder a new can if you know the spec of it if its the only damage other wise a new controller.
There will be fibre everywhere when you open the controller and the remains of the overheated can, possibly with 2 legs still soldered.
 
D

Deleted member 4366

Guest
#3
The main capacitor across the battery input will be blown, and you might find that the shunt is blown too. You can try changing the cap and/or repairing the shunt, but the probability is that there'll be other damage, so you might be forced to take the opportunity to get a better controller.
 
Apr 5, 2011
2,562
105
83
Brighton
#4
Controllers are cheap so, unless you are keen to fix because you have time and are keen to learn.....i wouldn't bother !! Just get a new one

If it's a 250w brushless system them your options are plentiful and price pretty much come .down to how long you are prepared to wait for delivery
 

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