AeroR

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FrSky Sbus receiver not working using main port on CC3D
« on: August 02, 2017, 08:57:59 am »
Hi All,
I'm having trouble connecting my Sbus receiver to the Flexiport on CC3D.
When the Rx is connected to the Flexiport I get the orange LED light on the Rx but not when it is connected to the Mainport.
I understand that the Sbus receiver usually works when connected to the Mainport.
Is this a faulty Mainport? How do I test if this Mainport is faulty or not?
I have upgraded my radio to FrSky Taranis X9D plus SE and Rx is Sbus XSR.
Have a look at these photos and let me if there is anything I'm missing.
Many thanks.
Regards,
AeroR

f5soh

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  • 4063
    • LibrePilot
Re: FrSky Sbus receiver not working using main port on CC3D
« Reply #1 on: August 02, 2017, 12:49:27 pm »
Seems your Mainport has something wrong, at least for power.

Double check if pins are not bend inside the MainPort connector, if you did a mistake with a short, a pcb trace can be burned also.

AeroR

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  • 18
Re: FrSky Sbus receiver not working using main port on CC3D
« Reply #2 on: August 02, 2017, 02:57:59 pm »
Hi F5soh,
You are correct.
Upon closer inspection, I found that one of the far left pin close to the ground pin turned black.
Can this be fixed or the board is toast?
Can I reconfigure the Flexiport instead?

Many thanks.
Regards,
AeroR

f5soh

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  • 4063
    • LibrePilot
Re: FrSky Sbus receiver not working using main port on CC3D
« Reply #3 on: August 02, 2017, 03:07:09 pm »
SBus is Mainport only, because the inverter in this port.

I don't known what do you mean with "ground pin turned black" ? Is oxidation ?
If yes, you can put some "KF contact" spray.
If burned you can the simply get the Ground / +5V from servo output port or Flexi and keep Sbus signal to pin4 - Mainport.