red,green and blue line at top of screen?

[fattyboombatty]

when i set my DVD to output 16:9 on my 28" 4:3 TV and watch a widescreen film, in the middle of the top black border on screen i get a horizontal line going across the full width of the screen made up of 1 green line,1 red line and one blue line. does anyone know what this is.

thanks

[Ono]

Is yours a Sony TV by any chance?

I get this when watching anamorphic films on my 4:3 Sony on WS mode.


It's a trait of the TVs. Annoying, but not much you can do about it.

[Alanok]

I got this when I watched a a dvd in widescreen and switched my Sony 25" 4:3 TV to widescreen mode to get an anamorphic pic. But the line wasn't coloured it was white. Not noticeable if the dvd your watching is 1.85:1 but noticable if it is 2.35:1 ratio.

I think it is just the 'limits' of the TV screen which you ususally don't see when watching 4:3...I think:D

[Tyler Durden]

I get these on my 4:3 tv also.

[Tim L]

I had those lines on the 4:3 Wega I bought a couple of years ago. They annoyed me enough to swap it for a Tau.

IIRC they are called AKB (Auto Kine Bias) lines and are part of some sort of colour calibration process. Normally (ie, in 4:3) they're in the overscan at the top of the tube so you can't see them.

[fattyboombatty]

thanks, guys. i'll be gettin a w/s tv soon so i'll just have to put up with it till then.:(

[Rainfall]

A good service engineer can sort this for you, I had the same thing on my new Sony 32 w/s, the engineer came to my home and it was sorted via the service menu, he took my deflection from 38 to 41 and it was sorted, he said to me at the end "I hope you can watch your r1 dvd's now":D

cheers Steve

[fattyboombatty]

whats deflection, why did he take it from 38 to 41 and why would you want it at 41?????.:confused:

[Tim L]

A good service engineer can sort this for you, I had the same thing on my new Sony 32 w/s...

I don't think you can sort it out that way on 4:3 set though. On a WS set the AKB lines, if visible, will be right at the top of the screen, and are a result of the set being improperly set up, hence they can be hidden by shifting the picture up or stretching it vertically slightly so that it's pushed back into the overscan. Anamorphic material is presented by increasing the horizontal deflection, so it shouldn't affect the postion of the AKB lines. However different picture formats such as NTSC may be vertically offset for one reason or another and it sounds like this is what had happened in Rainfall's case.

On a 4:3 set however the anamorphic mode is achieved by decreasing the vertical deflection. This results in the AKB lines moving down with the picture so that they are just above the used portion of the screen on 1.85 material. They are in the same place on 2.35 material, but due to the unused portion of the picture ("black bars") they are more distractingly between the top of the picture and the top of the screen. This is part of the design of the set and AFAIK there isn't anything you can do about it apart from forcing your player to output in letterbox format, which is a less than satisfactory solution.

[whitty]

This is a kinda late reply to this thread

but

I was reading this and I set up my old Sony 21" 4:3 set 5 mins later and guess what. RED GREEN BLUE. :(

I was FLAPPING and messing with channels trying to sort it and I sorted it by Wiggling the SCART Socket at the back, it is loose on the back of the set. (Not the Cable).

Lines have gone and its now back to normal :)

Hope this helps