topic Re: 49 XF9005 Horizontal lines in Android TV

49 XF9005 Horizontal lines

Thodoris74 — Mon, 22 Apr 2019 12:48:35 GMT

I've recently bought a 49 inch XF9005 and I've noticed faint horizontal lines extending to both edges of the screen whenever there are white or bright menu lines on single colored backgrounds (like on PS4 setting screens or PC windows). These lines are only horizontal, never vertical or diagonal and are of the same thickness as the original menu line, only much fainter. They also move should the menu's position change and can appear anywhere on the panel. (I've tried different hdmi cables, different inputs, even jpgs on USB sticks)

I've attached a photo that I've photoshoped to showcase the problem.

Re: 49 XF9005 Horizontal lines

Pascale_F — Tue, 23 Apr 2019 18:29:01 GMT

Hi Thodoris74,

Welcome to the community.

I'll see if I can find this out for you. Maybe someone else in the community can help in the meantime.

Thanks,

Pascale

Re: 49 XF9005 Horizontal lines

The_Black_Rose — Wed, 24 Apr 2019 12:52:04 GMT

Hi Thodoris74 ,

Does this happen when you have no external devices connected as well?

Cheers,

The_Black_Rose

Re: 49 XF9005 Horizontal lines

Thodoris74 — Wed, 24 Apr 2019 13:25:55 GMT

It does. With no external devices connected, I can still see (for example in the TVs help menu) faint lines extending from the search bar to the edges of the screen.

Re: 49 XF9005 Horizontal lines

The_Black_Rose — Wed, 24 Apr 2019 16:10:50 GMT

Hi,

I've found this link: http://bit.ly/2F7FrNW on the Sony website mentioning lines and bars and picture issues, could you try the steps in it and let us know how it goes?

Cheers,

The_Black_Rose

Re: 49 XF9005 Horizontal lines

Thodoris74 — Thu, 25 Apr 2019 06:03:55 GMT

Thank you Black Rose. I've already searched the page you've refered me to, but haven't found anything useful. It's as if whenever there is a line (or more) of bright pixels, the TV is compensating by lowering the brightness of the rest of the pixels on the same horizontal plane. Why it does this only horizontaly and not for the pixels that are vertical or all around is beyond me. Of course I'm just guessing here and it could be something completely different.

Of course I've tried turning off all enhancements such as contrast enhancer or local dimming.

Re: 49 XF9005 Horizontal lines

royabrown2 — Thu, 25 Apr 2019 06:24:29 GMT

@Thodoris74 wrote:
Thank you Black Rose. I've already searched the page you've refered me to, but haven't found anything useful. It's as if whenever there is a line (or more) of bright pixels, the TV is compensating by lowering the brightness of the rest of the pixels on the same horizontal plane. Why it does this only horizontaly and not for the pixels that are vertical or all around is beyond me. Of course I'm just guessing here and it could be something completely different.
Of course I've tried turning off all enhancements such as contrast enhancer or local dimming.

Surely it’s increasing the brightness of the rest of the line? Or using a lighter blue than on other lines, anyway.

And what happens at the right hand side (not in your picture)? After the white stops, is it light blue again, or is that side OK?

I think I recall that we used to see this ‘pre-echo’ effect on Trinitron CRT sets, in which case I might predict that the right hand end of these lines will be OK. Though OTOH, I would have thought that LED processing would be a world apart from CRT processing.

Re: 49 XF9005 Horizontal lines

Thodoris74 — Thu, 25 Apr 2019 07:07:45 GMT

I think you're right royabrown2. it's probably INCREASING the brightess (I only considered it relatively the white line it extends from) but relative to the surrounding pixels it probably increases the brightness. However it extends to the right side of the screen as well, not just to the left portion I've cropped in the photo. It's baffling.

Re: 49 XF9005 Horizontal lines

Win_88 — Mon, 29 Apr 2019 09:39:20 GMT

Hi there,

I'd try going back to basics:

Make sure the TV is up to date: https://www.sony.co.uk/electronics/support/lcd-tvs-android-xf90xx_x90xxf-series/kd-49xf9005/downloads/00015794 (keep in mind the notice posted on the About section)
Try resetting the TV to factory settings: https://www.sony.co.uk/electronics/support/televisions-projectors-lcd-tvs-android-/kd-49xf9005/articles/00170595

Win_88

Re: 49 XF9005 Horizontal lines

hitta_jonte — Tue, 30 Apr 2019 23:32:51 GMT

Happend on my LG tv, i got this answer from RTINGS. Anyway i got a third line (the first one on picture) and i got my replaced with a Sony tv and i dont see the lines now.

Re: 49 XF9005 Horizontal lines

Thodoris74 — Wed, 01 May 2019 10:35:08 GMT

Thank you hitta_jonte, I was going mad thinking I’m the only one seeing this, even if you saw it on another model tv!

I think RTINGS are wrong and it’s not part of the ps4 interface because I’ve hooked up my ps4 on 3 other TVs and a dell monitor and didn’t once see these lines. Also i see the lines on my Sony TV even on its own menus or on the windows desktop when I hook up my pc to my tv.

Re: 49 XF9005 Horizontal lines

hitta_jonte — Wed, 01 May 2019 10:39:43 GMT

Can it have to do with brightness or contrast? I have very low on both becuase i like it that way? I have good eyes and i should probably see the lines if i had it.

Re: 49 XF9005 Horizontal lines

Thodoris74 — Wed, 01 May 2019 18:24:10 GMT

I tried various settings including brightness and contrast but nothing changed.