Original A3-L 2 pod gyro strange problem not addressed in any of the set up videos

[Joehockey]

Guys need some help please. I have been going back and adding this Gyro to planes that have been discontinued for the obvious reason ( irreplaceable retracts and or 3 blade scale spinners ) . The videos online by James are excellent and I have set up aprox 3 with zero issues.
My challenge is a new problem on my most recent set up. Everything is attached correctly, and I am getting a flashing red light at first power on.

Please note this is not a solid red light at power on, its a flashing light.

Nothing I try fixes the problem. Do I have a bad Gyro , two in a row ?
I have searched the Motion RC videos and every possible video on this problem with zero results.
Any ideas ?
Thanks for any help you can provide.
Thanks
LDM

[kallend]

Flashing red usually means that it's not seeing an expected signal from the receiver on one (or more) of the input slots.

Check your connections again, it's easy to insert a plug upside down without noticing.

Or maybe one of the connecting cables is bad.

[Joehockey]

THANK YOU , REALLY APPRECIATE IT .I AM ALSO GOING TO TRY A NEW RECEIVER ( BRAND NEW 8 CHANNEL ON ORDER ) . I READ A OLD POST THAT SAID THE RUDDER TRIM HAD TO BE DEAD CENTER BUT THAT DID IT , I AM GOING TO UNPLUG EVERYTHING AND WAIT FOR THE NEW RECEIVER .
THIS WAS ONE OF THE SPECTRUM RECEIVERS THAT I COMPLANED ABOUT TO HORIZON BECAUSE THE HORIZON SERVO END HAD TO BE SANDED TO FIT INTO THE SLOTS