What's it mean when all 4 lights flash red?

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I have a Phantom 3 Pro. Replaced the main board it's been so long now I forgot the reason why, but after replacing the board all the lights flash red and yellow then goes to solid red. It won't let me rebind to controller. Guessing it's a firmware problem... Am I right?
 

ianzone

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I have a Phantom 3 Pro. Replaced the main board it's been so long now I forgot the reason why, but after replacing the board all the lights flash red and yellow then goes to solid red. It won't let me rebind to controller. Guessing it's a firmware problem... Am I right?
Light chart and try a manual link,,might work
Screenshot_20191216-090601.jpg
Screenshot_20191216-091442_Gallery.jpg
 
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I have a Phantom 3 Pro. Replaced the main board it's been so long now I forgot the reason why, but after replacing the board all the lights flash red and yellow then goes to solid red. It won't let me rebind to controller. Guessing it's a firmware problem... Am I right?
4 red lights means you have a hardware issue, could be just a loose ribbon connection I would check all your work if you have replaced the mainboard.
 
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