Testing BBSHD controller

[JCHobbes]

Thank you I did not see this post

[Tommycat]

Good stuff in the Knowledge Base for BBSxx… I'd start here.

https://electricbike.com/forum/forum...he-bbshd-bbs02



Regards,
T.C.

[JCHobbes]

I did not find any troubleshooting threads before I posted.

Just installed new BBSHD in fat tire trike. When I powered it up for testing, I heard a brief, very faint sizzle sound, the display powered up then off. Now I have nothing. The 30A fuse did not blow. I put jumpers between the anderson power poles to see if I had a loose connection. Still nothing.

Battery has full charge.

Any way to test the controller with a multi-meter before I replace the controller? My main concern is spending $ on another controller and frying it also. I cannot find any bad connections, but impossible to be sure due to no power at all.