Ages ago when I had a TiVo, I found that it was only recording the first few minutes of a particular series. I called faults and she said something about sending a reset of the timers that the box uses down the cable.
Does such a thing really exist or was it CS nonsense to fob me off? I can't remember if it actually cured the problem or if it just corrected itself over time. The last time I heard of timers was when I had a VCR
I ask as it's recently started happening again with The One Show on my V6, so I'm wondering if it's worth calling them again.