Red tinge on screen when motors start

[Malolo]

Howzit guys!

So when I power on my p2, I get a perfectly clear screen and good color going to my black pearl. But when I start my motors, I get a red tinge on my screen. The tinge stays on during flight until the motors are shut off. I was thinking it was my vtx cables being too close to other wires so I opened up the shell, isolated the cables from the others and fired up the motors with the same results. My immersion RC vtx is located inside my phantom, but I took that out too and that didnt solve the problem. I removed my pig tail SMA extension connector and plugged my blue beam ultra directly into the VTX, still the same problem. I have never fired up the VTX without an antenna, so I dont think that could be the problem either.

I'm pretty confident in my soldering job (been soldering things off and on for a couple decades now) but thats the only thing I can think of. I used some RA flux to do the solder job, could that attribute to the red tinge I am picking up when the motors are running? Anyhow, if anyone has some thoughts, I'd love to hear them. Thanks!

Malolo

 

[JesterR1]

Just a thought, but are you sure its not just a "glare" from the red LED's on the bottom parts of the motor arms? The IMU leds....

 

[Malolo]

Just a thought, but are you sure its not just a "glare" from the red LED's on the bottom parts of the motor arms? The IMU leds....

Thanks Jester but definitely not glare from the LED's!

So I am still troubleshooting the situation with no luck. Here is what I have done so far:

1. Bypass the anti-interference boad - no luck
2. Bypass the iOSD unit - no luck
3. Remove all solder points and reconnect with bare wires and e-tape - no luck
4. Swap go pros cameras - no luck
5. Swap Antennas on the VTX, and black pearl - no luck

I guess the only thing left to swap out is the IRC VTX to see if thats the root cause. If the problem still persists after swapping the VTX, then I would venture forth to guess that it has something to do with the electronics on the main board. I am running firmware version 1.08 but cant imagine that to be the problem.

Anyone else have any suggestions? Thanks!

Malolo

 

[Deadmeat]

Can you screw the gimbal off the airframe and screw in onto something just to see the displayed picture from a different perspective. Might tell you something. I know your limited by the ribbon cable but maybe worth a try.