iMac M4 no display issue

Hello, i have an iMac M4 that i bought 1 month ago it’s worked very well until yesterday, i think that the display is stuck in sleep mode, i power cycle the iMac i can hear the starting chime and can activate voiceover and log into my account all that with the display disabled.

We don’t have an apple store in the area where i live, just authorized resellers, it will take much time to take the iMac to the reseller for reparation, and if they can’t fix it, it can take few months for replacement, this is why i ask the community for hints to fix this issue before taking it to the reseller.

Best regards