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U tries cable or satalite boxes unplug,replug it back like an hour later?Now,the satalite or cable boxes should resetting itself back to the factory setting and upgrading it softwwares.The tv should have a signal now.If not,it is the cable or satalite boxes fault.Call the cable or satalite companies,request for a new box.
Unplug,replug the tv back about an hour later,u have a cable box,a satalite or a telicom compannies boxes.Do the same things.Let those boxes boot up and upgrades it softwares.Now u should able to go into the tv menu,go to PICTURE,go down to reset ur Tuner board back to factory setting.Still have the same problems after the tv and boxes reset,than ur tv the broscasting signal Tuner board is dead require replacing.
U have cable right? U don't need ur original remote,just use the cable,satalite or telicom provider
remote.If u use free air use a outdoor antena or Digital antena u will receive all the DTV channels free air.
there should be 3 sets of video rca jacks on tv or receiver they might have put them on the wrong rca jack in which they just need to be moved over
usually the 3rd set of rca jacks are component jacks not for tv or video but for low output signals say like cameras and only one set of rca's can be used at a time svg on one of them rca's will over power the vid's. so have no picture
1) Buy RCA remote part # 240895 original about $25.00
2) Enter channel 00 for video sometimes works
3) Channel down 4-3-2-Vid 1, Vid 2, etc. sometimes works
4) Try Auto-Program Channels selection ( can be accessed on
front of set buttons or remote
Let me know ...........................................T.