camera blocked

[rael]

Good morning, gentlemen.
for years use autocad and various applications, but often in creating
a new project our dear autocad reserves surprises.
today ..(I have tried all of them), I think I have inadvertently frozen or blocked the visualization of the photographic apparatus. I no longer see them physically on the video, all layers are open, the display settings idem. how can I proceed to make the device appear again?
Thank you for your help.

 

[Tristan]

cameradisplay = 1

 

[rael]

cameradisplay = 1

Yes, thank you. .
I tried that too. .
but nothing..direction in drawing other objects disappeared. .
I have remedied with the insertion of the project
in another dwg... and the device inserted appears and remains.. .of course I have lost the equipment already set..poco badly..comanywhere
mystery
Thanks again