Our V6 box did the same this morning. Followed the instructions in this thread, went through the obligatory trouble shooting over the phone including 2 different ways of powering the V6 on/off. Result engineer arriving Monday. I’ll be disappointed of he/she doesn’t have a replacement V6 on the van!
Thanks for the advice.
PS. Once the availability of cheap solid state storage chips improves, hopefully a V7 box won’t have a slightly less reliable hard disk to fail!
VM engineer arrived around 9am, agreed it was time for a new Tivo box. Installed box and updated software by 0930. Also checked the cable entry sockets - we have one for TV and one for broadband. Broadband was the new type so OK, TV was old type so replaced the protective fuse (in case of lightning strikes apparently). Good job and new box now working fine.