No type B marking on my box, also made in Tunisia. Had this box since last July.
Mine is a Type B (Tunisia). Was received new last week. Died after 2 days (blinking power light - not able to get into maintenance mode OR restart by long-holding the power button.)
Engineer coming 13th April to fix/replace. I'll report what happens here tomorrow.
Box played up again today watching a freeview channel, picture froze then came back pixelated then froze again. Box was laggy and not responding to the remote except turning off and on again which didn't fix the problem so had to do a power cycle. when it restarted all recordings on the box were marked failed to record. This is the second time in a week that this has happened.
Got on the phone to BT and an engineer is coming out on Friday, I will try to get a new box if possible, any more trouble and BT know what they can do with there equipment.
Fingers crossed for you. Hopefully the engineer had some insight into what's going on
Sorry, I said I'd follow up... The box was replaced (with same model - Tunisia/Model B). The engineer thought the disk might have died but didn't really know (flashing BT power light). The new box is ok, with the benefit that the NOW TV channels came down after a couple of restarts. (new box came with cellophane on top and sides; I'm sure the original box didn't have all that.)
BT engineer came today and of course the box was working perfectly. Luckily after describing all the problems we have been getting with the box he swapped it with a new one.
Let's hope that this box works better than the last one.