Will say I have a ?Humax I bought second hand, in my bedroom. Never been 100% as it loses the guide after about half an hour, and if left on for a long time start to lose the channels too. A power cycle helps. I thought I'd bought a duff unit at the time but I recall contacting the Humax helpline to be told words to the effect of, "Yes that's right, you lose the guide and have to switch off and on again". I decided then that they had a better reputation than they were deserving of. I suspect it "leaks memory" over time and finally runs out of resource.