Controller blinking one white light rapidly while charging.

Killancid · Apr 20, 2022

Mine was doing the left light fast blinking and assumed it was the battery. Had new one installed for 75@ computer store 6weeks later pick it up. And same problem. D J I. Garbage.
I used this 2100$ drone 15 times. They know about this and should make good on new controller. They know exactly how much time the phantom 4 pros are in flight

Griffin6 · May 5, 2022

Erised said:
Can you check the voltage output on your RC charger plug , it should be about 17.39 volts. Center inside of connector is the +, DC volts. If you have the voltage your charger should be good.(this rules out the charger as the problem)

I checked with a Fluke voltmeter and it is at 17.39 volts. The left flashing white light continues on my controller. Any ideas?

C simo · Nov 26, 2022

I replaced my battery and still doing the same

Yosvany89 · Sep 7, 2025

I will leave the fix to this problem in case that someone still has this issue with Phantom 4 controllers. I had the same problem and after a lot of research and a bunch of YouTube videos watched, I found what seems to be the problem:

CW2015 Battery Monitoring IC, the voltage monitoring chip close to the LED block.

Take your heat gun and apply heat to it for 30 seconds to a minute. The problem will be corrected after reflowing the soldering on it with the heat. The only issue is that it will show a charge only until 75%, even if the battery is full.

DanDH · Sep 7, 2025

Yosvany89 said:
I will leave the fix to this problem in case that someone still has this issue with Phantom 4 controllers. I had the same problem and after a lot of research and a bunch of YouTube videos watched, I found what seems to be the problem:

CW2015 Battery Monitoring IC, the voltage monitoring chip close to the LED block.

Take your heat gun and apply heat to it for 30 seconds to a minute. The problem will be corrected after reflowing the soldering on it with the heat. The only issue is that it will show a charge only until 75%, even if the battery is full.

Can you post a diagram of picture of where that chip is?