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post #1 of 5 Old 01-12-2019, 11:44 PM - Thread Starter
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Question about RGB alignment/registration on LCD TV

I've noticed over the past month or so that it appears that the alignment of
RGB has become slightly off. This is where it looks like you have the color guns of a CRT not precisely aligned so that you get pure white on test patterns. On the CRT tubes you adjust the guns to line up RGB correctly so you get a perfectly white registration on white grid test patterns.

What puzzles me is that with this being all electronic it's hard to believe this was come out of alignment so quickly (TV only a couple of months old and never damaged or abused). It's not terrible but you can see misalignment with what appears to be the red pixels.

Any help would be appreciated.
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post #2 of 5 Old 01-13-2019, 07:39 AM
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Quote:
Originally Posted by dubber View Post
I've noticed over the past month or so that it appears that the alignment of
RGB has become slightly off. This is where it looks like you have the color guns of a CRT not precisely aligned so that you get pure white on test patterns. On the CRT tubes you adjust the guns to line up RGB correctly so you get a perfectly white registration on white grid test patterns.

What puzzles me is that with this being all electronic it's hard to believe this was come out of alignment so quickly (TV only a couple of months old and never damaged or abused). It's not terrible but you can see misalignment with what appears to be the red pixels.

Any help would be appreciated.
This isn't really a calibration issue, as there are no controls available in LCDs for color alignment or geometry. Perhaps you should ask over in the "LCD Flat Panels" area, or contact the dealer or manufacturer for warranty repair/replacement.

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Last edited by Rolls-Royce; 01-13-2019 at 07:45 AM.
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post #3 of 5 Old 01-13-2019, 11:51 AM - Thread Starter
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Quote:
Originally Posted by Rolls-Royce View Post
This isn't really a calibration issue, as there are no controls available in LCDs for color alignment or geometry. Perhaps you should ask over in the "LCD Flat Panels" area, or contact the dealer or manufacturer for warranty repair/replacement.

I didn't think there was, but figured maybe I was missing something.
Thanks for the suggestions.
I'll contact the manufacturer.
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post #4 of 5 Old 01-14-2019, 05:38 PM
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The subpixels on an LCD are physically fixed in space. While there certainly could be something going on with the electronics, there isn't any alignment controls.
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post #5 of 5 Old 01-15-2019, 07:20 AM
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The more I think about this, the more it sounds like what is known as a "TCON board" issue. They've been known to cause different problems, most notably solid-color vertical lines on the display. These can show up on part or all of the screen.

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