Phantom 4 hardware or software problems

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I bought a lightly crashed phantom 4 standard drone, no real physical damage and hope someone out there might have some insight on repairs.

  • Video comes on when powered up with no fan noise.
  • When video is on gimbal will not respond to controller ( fan is off )
  • When video disconnects gimbal will responder to controller ( fan is on )
  • Video shuts down when fan starts.
  • No battery info. Low battery warning in red which blinks on left side of screen.
  • GPS is grayed out
  • Drone flies great with controller.
  • Warning comes up with a “ processer chip critically overheated. The aircraft will power off in 30 seconds. ( although it never does )
  • SD card ( no sd card although one is installed and formatted )
  • Flight sensors seem to function properly when flying
  • I get a ( Aircraft Encoder Error 0x2800020 ) when camera shuts down.
  • Replaced all of the ribbon cables except yaw arm gimbal flat ribbon cable which Looks great on inspection.

I have included screen shots showing the errors, my thoughts are that a pc board has failed.
 

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My P4 did have a light crash, although I have read multiple blogs about P4s having the same symptoms and have not found any blogs that had a solution. If I knew the function of each board and a wiring diagram I could trace the problem or find the solution from someone who has already repaired theirs with similar errors.
 
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My P4 did have a light crash, although I have read multiple blogs about P4s having the same symptoms and have not found any blogs that had a solution. If I knew the function of each board and a wiring diagram I could trace the problem or find the solution from someone who has already repaired theirs with similar errors.
All I'm saying is start from a clean slate, then you will know what you have instead of guessing
 
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My drone is a standard 4 drone that I bought for the cost of a battery. I spent 4 years in the Airforce trained in diagnostics and repair on crypto equipment . This is more of a puzzle for me that I should be able to repair. If I can it will alot of pilots on our website with the same issues.
 
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My drone is a standard 4 drone that I bought for the cost of a battery. I spent 4 years in the Airforce trained in diagnostics and repair on crypto equipment . This is more of a puzzle for me that I should be able to repair. If I can it will alot of pilots on our website with the same issues.
No one is doubting your ability, but just like a puzzle you need to have the right tools (picture on the box) to have a clue what you are looking for. You already said you changed out the ribbon cable and checked other things, so why would it be so hard to let the PROFESSIONAL! take a crack at it, or is it a pride thing?
 
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No not really, and why pay for something that could be easily fixed by our group through similar issues with used or new boards available. Not everyone can afford to pay for sending your equipment in having the diagnostics and marked up parts repair. If we work together we can fix many of these problems that are shown ourselves.
Have a blessed Thanksgiving 😊
 
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