Question about Sony KV-36XBR400 36" TV

Red diagonal spottted lines

Our TV suddenly has 9-10 red diagonal spotted lines from top right to bottom left. Disconnected all peripherals- it's definitely in the TV. Any suggestions please?

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1,139 Answers

These are called retrace lines they occur because of the blanking pulse not turning off the electron guns in the picture tube during the retrace period. Since this is occuring with the red gun there may be a proble with the video circuitry connected to the red electron gun of the picture tube. This would include the red amp and the red driver transistors. You will need a schematic and a multimeter to properly test these items.

Posted on Sep 21, 2007

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Hi.

Just read your list of problems The first fault (Diagonal lines & picture collapse from left & right) Sounded like either A poor connection or dry solder joint either on scan coils or scan coil plug / socket on main pcb.
If this were the case the engineer that called out should have spotted this & sorted it very easily. But you say it is still the same so what did he do ?
Did he give you a reciept with break down of what he did ? If yes please post it here for me to go over.

The sound problem you describe has thrown me a little so could you please post your tv model number on this page so I can see if this is a stock fault.

The static shocks you are getting is relatively normal & not a problem unless you are getting them off of speaker grilles or even tv casing if it is silver in colour.
I am UK based & have access to samsung technical but I will need your tv model number.

http://dysonmanuals.inc.io/

Chris.

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Red diagonal spottted lines

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Red diagonal spottted lines

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Anonymous

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6ya staff

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