Every other column of red pixels won't display on Sony KDL-52XBR9 LCD

[SurrealMustard]

It's been a while since I've run into this before, so I could use a little help. The attached image is a close-up of a solid white screen. What I'm seeing is red-green-blue-black-red-green-blue instead of red-green-bue-red-green-blue.

I haven't cracked into the thing yet, but before I do, has anyone encountered anything like this before? If so, what was the solution? T-Con? Ribbon connections? Something else?

[SurrealMustard]

I'm pleased to report that the repair (if we can call it that) was a success! The connection between the mainboard and t-con was loose on the mainboard side. One of the clips wasn't quite in all the way. Carefully reseating the connection was all it took, and the image cleared up immediately. PQ is fantastic now, (although the input lag is as dreadful as it ever was, but that's just the nature of this set) so I'm happy with that. Another victory for the repair team 👌.

[Davi.p]

Guy, i.see something different!... i see RED, YELLOW, BLACK, GREEN... is it maybe a screen from Sharp? Maybe quattron technology.. it misses blue.. it can be a flat cable from tcon to panel or a missing EOL resistor on the screen stripe board or tcon.. i don' t know..

[eccerr0r]

Looks normal to me, looks like red-green-blue-green repeated which is fairly common?
If there is no blue the screen would be yellowish. If it's white it's fine...

actually i'm not sure what i'm seeing, pixels are not perfectly focused. hmm

[Diah]

the close up Picture are normal for set seam it had 10 bit or more picture processing Panel .. thought 10 bit and higher can produce over billions color.

[SurrealMustard]

Guy, i.see something different!... i see RED, YELLOW, BLACK, GREEN... is it maybe a screen from Sharp? Maybe quattron technology.. it misses blue.. it can be a flat cable from tcon to panel or a missing EOL resistor on the screen stripe board or tcon.. i don' t know..

Pretty sure it's not an RGBW. I am kind of curious now to get the back cover off and see who makes the panel.

Looks normal to me, looks like red-green-blue-green repeated which is fairly common?

Is red-green-blue-green a common layout in LCDs this size? I just can't imagine that it's supposed to look this way. It's one thing to have shared subpixels on a 2k/3k tiny phone screen, but when we're talking about a 52" 1080p panel, it's a significant deficit.

[Davi.p]

How does it look this white image? White? Yellow?

[SurrealMustard]

I'm pleased to report that the repair (if we can call it that) was a success! The connection between the mainboard and t-con was loose on the mainboard side. One of the clips wasn't quite in all the way. Carefully reseating the connection was all it took, and the image cleared up immediately. PQ is fantastic now, (although the input lag is as dreadful as it ever was, but that's just the nature of this set) so I'm happy with that. Another victory for the repair team 👌.

[Davi.p]

i am curious how it looks on a close up photo of pixels now

[SurrealMustard]

i am curious how it looks on a close up photo of pixels now

Nothing too earth-shattering. Red green blue, red green blue.

[Davi.p]

it seems RYGB, the pixel is clearly sqare