P4 No Video Signal | Gimbal Flashing red / green

Joined
Apr 27, 2018
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Hi , I am looking for some assistance.

Issue : No Video.

Detail : P4 flys & most functions appear to work normally. Exception being
1. No video signal
2. SD card is not recognised.
3. cannot connect to the drone via the usb connector.
4. Gimbal light stays on initialise for 3-4 minutes (rapid flashing green light)
5. Gimbal lights flash 2 x red , 2 x green ( indicating firmware ??)
6. Inserting sd card caused the fan to stop for few seconds


RC : FW 1.9.3
AC : FW ?? cannot connect (by either usb connector or by checking dji go 4 app)

Trouble shooting steps.

1. downgraded RC firmware using dji go 4 from 1.9 -> 1.5.8 ( no improvement / gimbal does not respond to remote)

2. Replaced gimbal from working P4, including ribon from 3:1 to mother board (no change)

If anyone has any experience in connecting to a P4 in this condition or any tips on how to restore video it woulds be greatly appreciated.

Current condition : remote connects to AC, motors power up, Gimbal operates as normal, No video
 

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