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Re: Toshiba 46HM95 46 tv
If the line is all that is showing with black on the top and bottom. This indicates a loss of vertical deflection which is caused by the loss of the veritcal sweepignal. Check the output of the vertical section of the TV set. You will need an oscilloscope, and multimeter along with a schematic.
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are they blinking lines or just straight across from one side to the other blinking lines is the dlp chip going ( they cost a bit to replace)
no blinking then the mirror could of moved in the back of the tv, happens if the tv is not on level ground. or the dlp board needs adjustment ( happens over time as the plastic moves when hot to cold all the time)
what this sounds like is that you may have a cable in the wrong part of the tv like maybe a vcr or audio cable check your inputs in the back of your tv that sounds like it what it might be i have a big screen tv and if i have a cable in the wrong part it will hiss and have lines on it too i hope this can help if not reply to me at Jonk3y @aol.com
Typically this is a convergence problem and can be repair relatively easy. Refer to this video to determine if you truly have a convergence problem. Also make sure you use your TV's original remote to make this adjustment.