[NX Vietnam]

Two days ago, I take my car to the audio shop to tune up the sound.
The problem comes with the display screen. It's off and I can not know how to restart or turn it on again.
Anyone can help me?:crying:

 

[Taac]

Did you check the owner's manual?

 

[ProfessorX]

You should definitely take it back to the audio shop and ask them what happened. Could be an issue resulting from install error