Phantom 3 advanced transmitter circuit board

[Martin Samson]

Hi all,

I’ve got major problems with my transmitter battery apparently not charging, only getting two lights which go out after a few minutes. Have tested the battery & it is absolutely fine & fully charging ok although the transmitter thinks it is only 20% charged. Have tried resetting, rolling back firmware to previous versions & still the same result.

I’ve come to the conclusion that there is a fault on the main circuit board in the transmitter. My question is does anyone know where I can source a new circuit board? I’m in the UK but happy to purchase abroad if necessary.

Thanks in advance, Martin.

 

[MotorCycle-Man]

Question : How have you.... tested the battery volts and its total capacity ?
How do you know its charging OK ?
How old's the battery
Has the battery set for a long time...not charged ?

These questions I Hope will get you a good answer before you have to replace the circuit board !
To me sounds like the battery is of a very low capacity !

 

[Martin Samson]

Hi MotorCycle-Man, thanks for the reply.

When I removed the battery I tested it with my volt meter & got a reading of 8.2 volts which I understand is the fully charged reading for a healthy 7.4v lipo. When connected to the transmitter just prior to removing it, there were only 2 lights lit & the dji go app was reporting the transmitter battery charge state as 17%. The battery is dated 16/05/2016 & gets used at least 2-3 times a month during the winter & much more frequently in the summer months.

While the battery was disconnected I plugged in the charger to the transmitter & noted that the voltage at the battery socket pins on the main board was 8.3 volts implying that the charger is supplying the correct voltage to charge up the battery. I turned on the transmitter with the charger connected but was still only getting 2 lamps lit.

Incidentally, this problem first occurred immediately after a transmitter firmware update ( latest update 1.19.3 I think). I have rolled the firmware back to the previous setting but the problem obviously still exists.

As such I don’t think my battery is at fault but I would be happy to be proved wrong!! Any other suggestions would be more than welcome!

Martin.

 

[alokbhargava]

You may be right in your conclusion but open circuit battery voltage may be deceptive. Place the battery back into RC and then check battery terminal voltage. That would give you more conclusive result.

I have never opened my RC so do not know the details of LED circuits. Can’t comment more.

 

[quaddamage]

does anyone know where I can source a new circuit board?

It may be easier to find the whole RC. People tend to damage their drones much more often than controllers, so they're quite cheap.

btw, in Phantom series, the RC doesn't only "transmit" signal, but it also receives video from the drone. So it's more like transciever. Or simply RC.