Is the receiver hooked up to a dish if so unplug power and unplug all the cables, then power backup see if that helps. All 8888's doesn't sound like battery...
If it was the battery, you could still use the Analog (you couldn't access the Digital), and the time (and/or channel) would still display. So, it must be something else..???
I hate to say that unless your good at repairing boards or the power supply in the receiver then you may have a door stop. If the battery was dead the only thing that should happen like voomvoom commented was a lost of the digital and the wrong time displayed, the 8888 message is most likely a hard error.
I think Sergei means the Video Cypher module/assembly.
The receiver is not completing the self-post warm-up. Basically it is sitting in a spot where it keeps rebooting the circuits trying to attain a full warm-up, and not making it.
Could be the power supply, could be other things. It isn't the battery as stated above.
Your correct Linuxman i did mean the Video Cypher module. I did some research and found this 8888 problem on other electronic equipment and most seemed to be part of a memory / CPU problem during post . The big question I ask before, was this a working unit and did this just come up or did you power the receiver off, since I've got three 920's this could be of interest to me.