SXS80 rebooting on and on

Hi,

I got an AX6000 sytem with 2 sats.

SXR80 router + two SXS80 sats

I upgraded to latest Firmware ( 3.1.0.104 )

It worked for a week and then now I have gor one of the 2 sats rebooting all the time :

- front led blinking white

- power led green for a while then no led (no power?) then green (so I guess it's rebooting)

I cannot see the SXS80 in the web admin portal and I t failed to sync with th main router.

I tried factory seetings by using reset button but it does not change anything (don't know if anything is happening as power led is sometimes red, amber, green with any blinking / solid combination)

Any idea how to solve this?