When I power on my P4 I get no video signal and the Gimbal status light blinks red 3 times in rapid succession. I cannot find a status description for a 3 blink pattern. Any ideas?

No video, gimbal functions normally.
DJI 4 app does not display any error codes from camera or gimble.
Gimble status in Go app displays n/a.

Link status LED on gimble displaying a repeating 3 rapid blink code. No correesponding code in literature.

Background:
Crashed the drone and needed to replace shell.
Camera was working fine before tear-down.

Did you replace any boards?

I'm sorry to hear the accident. Please send it in for fully diagnosis and repair: http://www.dji.com/support