Note: part of this post been posted earlier ...
Images below shows opened esc with a couple of ic's fried. Any idea/s on what could have happened? Replacement esc not coming until weeks :( but any ideas on what could have happened will help in preventing the same mishap. THANKS.
Was checking out wiring to troubleshoot why a 5.8ghz video wireless system was blanking out whenever throttle is rev up and then all of a sudden smoke came out of the esc.
Specs:
30A rc timer esc;
30C 8000mah battery;
v 39 code;
2.5kg all up weight;
turnigy 9x txrx system;
custom frame nearly 60cm motor to motor quad;
with gps and magnetometers;
Thanks.
Replies
Most of the time those problems are because of :
- a short or a motor synchronisation problem causing a current spike, effectively destroying the Fets by overcurrent condition. A bad connector or solder contact can have the same effect.
The solders at left on the picture are not good quality solder, at least visualy.
- a FET problem (as you have more than one FET exploded, i think the first solution is the right one).
Adding a 470 uF capacitor on each ESC input power rails can help, because if power cables have a small inductance, this can cause problems like this.
It seems on the picture that you don't have such a capacitor.
Last, if you want high reliabily, purchase high quality motors, ESCs, and connectors.
One more note, checking wirings included increasing throttle and that's when smoke came out of the esc ...