I recently purchased a used 811 receiver on e-bay.  The auction said the model was "tested and working".  When I hooked it up, it immediately gave a smart card error.  The error number to the right was 301.  When you go to the setup page, the smart card number is S00000...-00 (all zeros).  Because of this, Dish Network tech was not able to help me.  I know the smart card is internal with these units, but I was wondering if it was something like ram in a computer that may have come loose and simply pushing it back would fix the problem or is it hard wired into the system and un-reparable by me.  If anyone has some information that might help educate me, I would greatly appreciate it.
Thank you.
				
			Thank you.