Thanks for posting your inquiry on the Forums. Unfortunately we don't have any repair shops for purchased boxes, but based on your issue, this doesn't sound like a repair fault. The box may not be assigned to your account correctly after your recent change. We can definitely take a look and see if there's anything we can do to help.
Since addressing your issue involves accessing your account, please send us a private message at @CommunityHelps next time you're online.
Our private messaging system is explained in this blog.
@RogersCiliois correct in that the 4 dashes typically indicates a box that is not properly authorized. Sometimes the technicians who come to your home, or first level CSRs, are not capable of getting the box to work, however, when pushed, a second level tech can often get the box to work.
I encountered this once when I returned from a 3 week vacation. Rogers initially said it was a faulty box (which I owned), but I stated, politely, but emphatically, that it was working the day I left and there were no power surges/failures in the intervening time. Second level got the box working the next day!