For a few days now, I have not been able to tune my guitar with my CODE 25. I manage to enter the TUNER menu but nothing happens when I crat a string. Have you ever had the problem? Do you have a suggestion to solve this problem?

Depuis quelques jours, je n'arrive plus à accorder ma guitare avec mon CODE 25. j'arrive à entrer dans le menu TUNER mais rien ne se passe quand je cratte une corde. Avez vous déjà eu le probleme? Avez vous une suggestion pour résoudre ce probleme?

I left the F/S aside for a few days and today when i decided to use it just stoped responding.
The display shows A1 sometimes it twinkles, sometimes dont. But It doenst responds when i press the buttons.
I press ALL the F/S buttons and nothing happens!!!

I didnt drop it or nothing similar, the F/S is kinda new i bought it in June, the F/S conditions is visually intact.
Am i forgetting something?

Things that i've tried already:
- Factory reset my Code 50
- Factory reset my F/S

My setup:
Foorswitch 91109
Marshall CODE 50