This is on a new thread because so many threads mention this problem that posting a reply on all of them would take up my whole day .... if it proves useful as a fix .... be my guest and cut an paste to all relevant posts . My neighbour's Phillips Freeview TV has channels missing ..... notably Film 4 , Yesterday etc ..... (it was'nt an aerial issue because his set up in the front room was still working perfectly sharing the same aerial socket). I tried the usual rescans.....several times....... 71 stations came up but no joy on missing ones ...... then I noticed Setanta Sport was lodged in the No. 34 slot where Film 4 used to be in my set top box across the road ..... thought it might be hogging the slot where Film4 should be ...... so I selectively uninstalled Setanta Sports from the No.34 slot and .....Bingo!! ....after a rescan 91 channels popped up including all the missing ones .....Yesterday lodged at No.12, Film 4 popped into the correct No.15 slot....and Setanta relodged at No.34. Seems to be all working perfectly now. I'm not a TV engineer but would be interested to know what was the technical reason for the log jam. Hope this fix helps all you others out there with a similar problem.