I was using a Directv D10 box & noticed an add on craigslist for a DVR80 Directv / Tivo box.
I bought the DVR80, pluged it in, took out the card from the D10 plugged it into the DVR80 & Amazing it worked great! better picture etc. For about a week

Now for no apparent reason the DVR80 gets an error on screen "you do not have access for this channel" on all channels.
Why did it work for about a week now it does not?
Thanks