TV keeps doing service scan everytime I switch on
TV Model: 26PFL5522D/05
Software version: IdtvZapper_HW261.256_SW2.7.77
I have an issue with my TV where, each time I turn the TV on it has lost all the channels and does a full service channel scan. (Scans for channels - same as when you initially set up TV when new). When I turn TV off again it loses them all then does a new service scan when I next turn the TV on.
This is highly annoying and there does not seem to be anything I can do about it at present. I tried looking for an option where I could reinstall system software to see if this fixes problem but could not find this option anywhere.
Thank you for any help.