Arming problem on apm 2.8 board

Hlw everyone, suddenly I am facing a problem… I am using amp 2.8 board with m8n gps + compass… Everything was going fine… Today I saw that when I plugin my battery the on board navigation leds red and blue are glowing after 10-12 sec later .
So, for this latency motors are not beeping and not arming but if I plug out and aging plug in the esc signal connector of each escs then it works.
It means I have to give power the apm board first and after 12 sec I have to power the escs.

Can anyone solve this problem?
Please help :pray:

Sounds like a good opportunity to replace that obsolete and no longer supported Flight Controller with a new one that is.

unplug one thing at a time until the problem goes away.

Yes Today in morning when I plug the battery it was working fine…
I didn’t do any thing on it. I don’t know how it becomes fine :slightly_smiling_face::slightly_smiling_face: