You've been trapped. A good friend indeed; who gave it to you. !!!!!!!!!!!
Give it up; man. Otherwise, you might have to sell your home to make this TV to get repaired.
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SOURCE: Black screen for HDTV channels -- but TV menu and DVDs display normally
Try hard reset, Please unplug the tv cables and power cables for 30 min and redo the cable and check its working ....
Good luck...
SOURCE: Emerson 20 inch flat screen tv problem
i had the same problem with a 32 inch and i kept "clicking" the channel changer on the remote to force the tv to go to another channel (that had previously been selected during the initial auto scan) --- still trying to figure out why the tv locks onto the scanning for channel
SOURCE: I have a Westinghouse 26 inch TV.
I carried my Westinghouse TV to the basement. Unplugged the antenna from the digital converter box and connected it to my digital TV. I then re-scanned for channels and found channel 9. After carrying the Westinghouse TV back upstairs, I connected the original set-up and tuned to channel 9 which was now showing on the screen as no signal. From that point I moved my VHF dipoles until I had located the correct position for reception. A little labor intensive, but I was fortunate to have another antenna that was receiving channel 9.
SOURCE: no tv signal on my olevia 232-s12
cable or Ant.. ? after the scan if there is no channels found (0 digital, 0 analog) then try with cable or Ant to see if any of them work.. if they still don't pick up any channels and the whole yellow progress line goes across.. then it sounds like the tuner on the tv is bad.. and the tuner is part of the main-board so the whole main-board will have to be exchange or repair.. contact Amergence technology they are a 3rd party repair center that service Olevia TV's and they will be able to give you an idea on the repair cost..
<<< Amergence Technology number is 866-965-3842 >>
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