Sony XBR-49X700D
Manuf: 2017
Yet another post complaining about vertical lines in an LED...
I have a Sony XBR-49X700D that decided one day to display a black screen and the dreaded "Sony Six Red Blinks". I buried my face in my hands, fully aware that this particular error code typically means either of two things: a failed T-CON board, or (more likely) one or more dead backlight LEDs.
I did the easiest thing first: I swapped the T-CON board... with no change in status. I heaved a plaintive sigh, and began the onerous chore of complete disassembly of the TV to get to the LED backlight. Sure enough, one of the LEDs in one of the boards tested dead. I replaced the bad LED strip with new. The backlight array works perfectly with no red blink code. However...
Now the display has vertical lines on both sides and a large swath of grey cuts along the middle (see image). Vertical lines typically are caused by a bad T-CON board followed by a poor connection of the ribbon cable. I swapped the former and re-seated the latter--no change.
Surely there's some simple thing I've overlooked. I am stumped.
What causes vertical lines? What else should I check?
Manuf: 2017
Yet another post complaining about vertical lines in an LED...
I have a Sony XBR-49X700D that decided one day to display a black screen and the dreaded "Sony Six Red Blinks". I buried my face in my hands, fully aware that this particular error code typically means either of two things: a failed T-CON board, or (more likely) one or more dead backlight LEDs.
I did the easiest thing first: I swapped the T-CON board... with no change in status. I heaved a plaintive sigh, and began the onerous chore of complete disassembly of the TV to get to the LED backlight. Sure enough, one of the LEDs in one of the boards tested dead. I replaced the bad LED strip with new. The backlight array works perfectly with no red blink code. However...
Now the display has vertical lines on both sides and a large swath of grey cuts along the middle (see image). Vertical lines typically are caused by a bad T-CON board followed by a poor connection of the ribbon cable. I swapped the former and re-seated the latter--no change.
Surely there's some simple thing I've overlooked. I am stumped.
What causes vertical lines? What else should I check?
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