twice in the last month we have switched on the Youview UHD box to find that it is in Maintenance Mode as we don't want to lose any recordings we have chosen the software reset option. It then works fine - any reason why it would start in Maintenance mode (blue screen)
I have the DTRT2100 and it has done this at least 3 times since the beginning of December. The first two times I did a full internet reset (retaining the recordings) but I got fed up having to reprogramme the scheduled recordings so the last time I just did a software reset and it worked - until the next time.
I think I replied to a previous forum post you did about this issue.
I am a BT employee and will investigate your issue. Are you able to PM me your telephone number so I can investigate further.
Sounds like a hardware failure on the set top box.
Look forward to hearing from you.