Originally Posted by JimDrew
Red/green flash indicates that there is a problem with the RF module talking to our board. This could occur if you attempted to upgrade a v2.x receiver to v3.x firmware. The v2.x firmware receivers require a new RF board, which is why they have to be sent back to us as part of the upgrade.
sorry for my poor English, 4*60 is right : there is not red/green flash only red flash my IFS is V3.8 I didn't attempt any upgrade as it is already V3.8 firmware.
the first part of the video is your Xtremlink rx that works perfectly with normal red flash until TX is on than it change to green. I do the video of the two RX to show that Battery A123 is ok as is the TX.
attached a pic of my new Jet that was suppose to make the maiden today but after this issue on my IFS Graupner RX I have to found the reason before puting in another RX ( maybe a short circuit in one of the servo extension I dont know )