The message, is usually caused by one of two things.
A) signal
B) box not on the account properly/authorized properly
That you changed the location, where the one box worked OK, and the other didnt still... means that the signal should be fine in that location (could be not great in the other location.. try the GOOD box in that other room?)
I would assume then its an authorization issue. Give a call into support.. have them double check that both boxes are on the account properly (check the S/N).
I would even have them REMOVE the problem box, and re-add it, and re authorize it.. see if that helps.
Especially if you are having more than one channel having issues... its more than likely signal related.
have you called in to get them to check signal levels?
Have a technician out?
SOmetimes, all it might be is a simple splitter or cable that needs to be replaced... they do wear out over time.
A technician can check from the street, to the outside, inside, etc. Replace as needed, even put in a power booster if needed.
IF who you switch to, ends up using the same cabling inside the house to get from TV to TV, you might end up with similar issues if its something inside which has worn out.
Rogers can not run anything inside walls, etc.
They are not legaly covered to do so.
So generally yes, inside the house, any cable lines that would need to be replaced, is under the OWNERs responsibility.
All that being said, there is more that the tech could have done.
Putting an inline booster, at least for the one or so runs that are having issues.. push it HIGHER than it should be, so even with the LOSS might end up being ok in the end, etc.
