Samsung has acknowledged that recording functions do not work properly 'for some users' (!) but not any particular causes for these problems.
However we found that the 'too many reservations' bug can, after storing the channel list and fovourite channels, be temporarily sorted by restoring the TV to factory settings. After doing that 'too many reservations' went away but the regional BBC1 channel setting went haywire instead....
That’s interesting, my TV keeps losing the local BBC1 channel on Freesat…. My solution is to forget about Freesat option and to use the satellite option. It takes a few minutes to find and set-up the favourites list, but once its done your are go to go, plus you get Channel 4 in HD, which you cant get on Freesat. PS I have given up on the recording feature, most progs are on catch-up, but you cant skip the ads on the commercial channels.
This has just happened to me .
All sorted now
just did a manual retune tune
you will need to retune the 6-7 blocks
I did it from top to bottom
only takes a couple minutes of your time .