BBS02 contoller PCB parts replacement questions

bgt

100 W
Joined
Sep 22, 2014
Messages
110
Location
The Netherlands
In trying to clean my BBS02-500W/36V engine I damaged some parts on the controller PCB. So could somebody help me out in determing the way the diode, Arrow 1, is placed on the pcb. Which side has the anode?
Position 2: damaged SMPS coil...........whats the induction value of this coil?
The power mosfets are the old ones but I ordered the modern ones to replace this.
https://www.dropbox.com/s/sieeyjj67b9sxuv/controller3c.jpg?dl=0
 
Here's a picture of the area on an un-fried one. But it's a bad sign the inductor burned up. This generally means the voltage regulator was trying to feed full pack voltage into the 12v supply and something downstream fried, possibly including the 5v regulator. You could try replacing the parts, but there is a good chance they will just fry again. The inductor is marked 101, which I assume is 100uH.

BBS02 voltage regulator area.jpg
 
It is not fried, I bumped against the coil core with a screwdriver. I just have to replace it.
Thanx for your help. Mine read 21 on the two last digids so it must have been 120uH.
 
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