bl conversion wont spool up

[B.Ewing]

HELP my nano will bind but will not spool up. ive got 20-25 flights on my brushless conversion from astroid and now my motor wont run.

I did find the signal wire broken off of a solder joint after a bad crash. reattached the signal 2 times (just to be sure) and still wont spool up. So, how do i go about determining if my main board or my bl esc is bad? ive got a good ranged volt meter. power in is fine continuity thru signal wire is fine to each solder joint, motor poles dont have any voltage. does anyone know what i can check to verify which board is a problem

[lespaulrob]

You might want to try to re-solder all joints. If your crash was bad enough to break one solder joint, it's likely that others were damaged as well.

[Daryoon]

It sounds like no signal is getting to the ESC. Could you be more specific which signal solder joint broke off? Is it the solder joint at the FET leg? Or the signal solder joint on the ESC itself?

Check to make sure the signal wire can trace back to the MCU leg. So check continuality the whole way, from the FET leg to the MCU leg.

Here's a photo that will show the signal trace. (The right photo. Sorry about the size...but needed in this instance)

[B.Ewing]

thanks daryoon the wire broke off the BL esc.

[Daryoon]

Deer...I meant to say the right photo. LOL

You can make out the signal wire trace all the way back to the MCU leg.