Removing BBSxx controller potting. Not for the faint hearted!

Fordulike

Esteemed Pedelecer
Feb 26, 2010
3,802
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I was going to attempt to remove the factory potting compound from my old BBS02 controller.
I didn't need to do this, but just wanted to see what all the fuss was about on Endless Sphere, where members have mentioned it being a PITA.
After a few minutes I gave up, realizing that it would be a long and arduous task to do it properly.

2016-03-10-176.jpg

This is just a warning for anyone who wants to try and replace blown mosfets, that you would have to be ultra careful. As you can see from where I have removed a small percentage of potting, there is wiring on the circuit board that could very easily be damaged.
Plus poking around capacitors with sharp implements could be potentially dangerous.