wAP AC 5GHz problem

Hi all, i have a problem with wAP AC 5GHz radio , when I test the speed with the phone the board is always restarted, and when I uncheck one of the chains /second or third/ everything is fine and i get maximum speed ! In conclusion, the board works with only 2 chains regardless of which one we chose, but on 3 chains board every time reboot it self !

I have all 3chains enabled and no problems with restart. Maybe you have problem with power?

On Sys/Health i see 23.1v … this is normal ?

23V is easily within acceptable voltage range, but are you getting enough amps when fully loaded? Are you using ultra thin CAT wire from your power injector and/or extra long? Try replacing with another thicker CAT cable. You can also watch the voltage when highly loaded with two chains and see if it drops significantly when doing a speedtest, that would indicate bad power adapter or thin/long POE cat cable.

First , i thank you for the help !
I understand that the power adapter has been changed inadvertently with less than 0.2A 24v and may be the problem!
I will write by replacing it if everything is all right, at 99% I’m sure this is the solution.