nick21century

I think it is not the problem of DVR, i want to know if you change another camera from 4 (normal) to 1 (defective),is it still show white problem ? if so, check out if there is a strong light source from opposite,that's the problem.

Hello Guys, I am Nicholas Lee. I have been in security field over 10 years,i willing to answer if anyone has questions about Security products,i'd like to help. Cheers ! Nicholas

If it is not the problem for operating mistake.you can send back to the dealer to solve this problem.