Did I blow my BBSHD controller?

[dhdallas]

I was out for a ride and my chain was slipping. When I got home and put the bike on the repair stand. I applied the throttle and then also applied some brake pressure in order to put a load on the chain and see if it was really slipping (no more than 10 seconds). The chain slipped a few times and then everything went dead...I mean everything; no display, nothing. I recharged the battery & then everything powered up normally so I ordered a new chain and a new chainring. BUT a few days later, after putting on the new chain ring and chain, I once again have no power, no display, nothing (and the battery is fully charged). I am thinking I blew the contoller when I foolishly applied the braking load for the 10 second interval. I doubt I could have actually burnt out the motor core that quickly. What do you guys think? The bike conversion is less than a year old and gently ridden with no crashes.

I don't use the electric brake cut off function, just my old school V-brakes.
I checked my connections which seem ok and to have a bad connection somewhere at the exact same time I am applying a load to the drive unit when checking the chain seems too much a coincidence??? I hate to buy a new controller, wait for it to come, install it and then still have everything still dead.

 

[amberwolf]

What voltage do you read on the battery output connection to the bike?

(typically this is different than the charger input, so you can have a battery that charges but wont' run anything because the output fuse b;ew or BMS discharge FETs failed).