My Nikon D90 (DSLR) camera showing Err, and when I have a look at it. I found that the mirror get stuck and does not move. I found that It is a common problem for DSRL camera and need to send for repair at the Nikon centre!!
Any bodies have an Idea how should I fix it, I meant that in the Centre or by myself!!
How much it may cost me!!
https://youtu.be/qmQV6YuHcpw
Lots of YouTube video on how to fix it