Help Can't Change Date/Time on my 4 channel Net DVR Avtech

[arkar latt]

Thanks for reply tricky.
Finally i have solved that problem on last friday (04/03/2010).
I found the battery on the below of the circuit ( main board) and it was too small and " FIX".
I can't removed that battery from main board unless i break it.
So i send that DVR to the some electronic services center and asked them to changed the battery for me.
It is work after all.

Here is the battery's model no.
If anyone who have lost or face the same problem like me.. here is details

" MS62 " is the battery model no and it is smaller then the watch's battery.

located under then main board. ( up - side - down)
See ya !

[arkar latt]

Yes scorpion you are right.

i have found this battery on the board and already changed it.
It really work.

Thanks for the post !