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Hello Check its antenna connection for firmness. It should be tight to an extent. If it got loose, the snow [video noise] will be there on picture. If it tight and still there is snow, check for any connection break at the antenna mast over the roof. If all are found OK, and still the problem perists, the tuner to your TV is defective and should be replaced.
Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Hi my name is Roety,
I can help you with your issue ,
Sounds like a bad SSB small signal board
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encompass.com
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i just found out why, turn on ur tv and remove back look directly into 3 lenses, if the picture is not nice and clear or looks snowy in all 3 u will not get good color or brightness. I removed my blue tube assembly and took it apart WHILE OUT OF TV. there is cooling fluid between lense and tube, this fluid over time will build a film on the face of the tube and get thick enough to block the tube from projecting picture. (MARK EDGES IT GOES BACK TO GETHERE THE SAME WAY IT CAME APART).Find some new fluid then carefully dissasemble and clean interior of lense, housing and tube thouroughly. Reassemble and fill with new fluid. Do not use old fluid it will be cloudy and snow globe effect. Only do 1 tube at a time this will allow u to realign cross manually as close as possible before u perform convergence. Leave the green for last that is the center and the red and blue are moved to match green. Also be sure to clean mirror and back of screen. Pete
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