Intellex 4.0 Lt Premier Frequently Reboot

[costas]

Hello
I have a Intellex LT 4.0 Premier, the
problem is that the reboots frequently , I changed the power supply, the same problem occurs
randomly, I have not to change them video capture card , I met at
several sites intellex LT4.0 this problem, it is possible to do so if
input is not coupled cameras?

Please any ideeas is wellcome
Thank you
Costas