Mini 0801 image too dark

[adaoakongo]

Hi everyone, My camera is not working properly because the image is too dark (almost black) but when I put my finger in front of the lens and i take it off suddenly, i can see a good image for a minute and it goes dark again!

Do you know what can be the reason?
Thanks in advance

 

[jokiin]

Try resetting default settings and see if the problem remains

 

[adaoakongo]

It didn't work!
Anyone has an idea to resolve it?
Pleaseee

 

[jokiin]

might be CMOS failure