RDK-10000

3 days ago got a message on my secondary cable box.  It basically said there was an error and to check the cable and restart the box RDK-10000.  Followed instructions same issue.   I later did troubleshooting on-line with the same error appearing.  I than started a two hour chat with no resolution but perhaps the box was bad.  Because the tech want me to review a new change of service agreement (as I was not changing my service) I opted to return the bad box to the xfintity store.  I picked up a alternate box from the store and installed.  Same issue and again used trouble shooter to help The trouble shooter started by resetting my modem than performed a system refresh.  The small box as usual did not reset just the main box.  THe online trouble shooter directed me to voice support.  After another evening with tech support the issue was not resolved however I was told that in four hours it would be fixed.  Not much to my surprise after awaking the box still had the same error.  Note that when the main box resets the error code changes to RDK 03036 but goes back to RDK 10000 after the main box is back up.  I have done all resets told I have switched around the location of the two boxes and even changed the splitter with the same error still appearing.  I even received a call from Advance tech support however I could not make out much of his words due to his heavy accent however I made enough out for him to tell me the system is up and operational however when I told him it was out when I left the house he wanted to start the same troubleshooting process.  I did ask if had a new magical procedure that all the other tech did not know about and he did not understand.  I asked if he was just going to try and refresh and if so go ahead as I was not home.  So I ask does any one have any kind of solution or something I can check or do I have to wait until next week when a tech can come out?