RC India

One of my Hobbywing XRotor 40A-OPTO ESC is faulty, its not rotating motor at same speed of other motors with same throttle input?
I checked with different motor, so I confirm that it's not motor issue.How can I repair it?
Please visit video, see circled motor is rotating slower than other motors.
https://youtu.be/G6XhDTh4IRw

Does the RPM stabilise at 35% throttle for the circled motor ?

If not then inspect the connection the bullets connectors and resolder them and inspect the entire ESC for any signs of visual damage.
Finally do a ESC calibration using the pixhawk.
If the problem persists then you'll need to replace the ESC with a new one.

Regards,
Mohammed Naveed

Yes, circled motor RPM stabilise at 35% throttle? what is reason? whya this ESC need more throttle to stabilize than other, is it sign of becoming dead in short?
 can we repair it?

its early signs of the esc going bad! Replacing is always a safer option than short term fixes in multirotors!

its so sad, we need to replace esc at start, i am getting this issue since first flight.
Also One of my lipo battery has 5th cell dead in first flight only? any solution? i tried manually recharging it.

what brand lipo is this? whats the capacity and C rating?

Is there any physical damage to the cell?

fixing a lipo cell is temporary solution, you maybe able to revive it from 2v or less all the way upto 4.2v fully charged but it will never be the same, that cell will just discharge the quickest and cause all sorts of trouble!

Probably your crash is what has caused all issues.

no no its not crashed because of that battery, i have two battery to connect parallel, but as one battery is not working i am using good one.
Battery brand is orange, capacity is 4200mah, its 6s battery.

i meant that after the crash all these issues are coming! Do inspect for any cell punctures or cell deformation. if you have done everything correctly then speak with the seller from whom you purchased the lipo. they may help you out better