No, it's not true.
Or well, back in the days when you had say 2MB graphics memory maybe you couldn't run the highest resolution at 24 bit so you had to use say 8 bit.. But well, noone have 1-2MB vram longer so no, not true ;D
Got a tip for us?
Let us know
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SR MBP LED LCD yellowish and gradients issue
- Thread starter issic
- Start date
- Sort by reaction score
Or well, back in the days when you had say 2MB graphics memory maybe you couldn't run the highest resolution at 24 bit so you had to use say 8 bit.. But well, noone have 1-2MB vram longer so no, not true ;D
0 1 2 3 4 5 6 7 8 9 A B C D E F
-----------------------------------------------------
0 | 00 FF FF FF FF FF FF 00 06 10 68 9C 00 00 00 00
1 | 0A 11 01 03 80 22 16 78 0A 50 C5 98 58 52 8E 27
2 | 25 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
3 | 01 01 01 01 01 01 9F 25 A0 40 51 84 0C 30 40 20
4 | 33 00 4B CF 10 00 00 19 00 00 00 01 00 06 10 30
5 | 00 00 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6 | 54 4E 31 35 34 42 54 00 00 00 0A 20 00 00 00 FC
7 | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 14
-----------------------------------------------------
Valid DDC block: checksum passed
EDID Version........1.3
Manufacturer........APP
Product Code........26780 (689C) (9C68)
Serial Number.......0
Manufactured........Week 10 of year 2007
Max H Size..........34 cm
Max V Size..........22 cm
Gamma...............2.20
DPMS Supported Features:
------------------------
Display type:
-------------
RGB color display
Input signal & sync:
--------------------
Digital
Color info:
------------
Red x = 0.595 Green x = 0.320 Blue x = 0.155 White x = 0.313
Red y = 0.345 Green y = 0.555 Blue y = 0.145 White y = 0.329
-------------------------------
Monitor Description blocks:
---------------------------
Descriptor #0 is Timing definition:
Mode = 1440 x 900 @ 60Hz
Pixel Clock.............96.31 MHz Non-Interlaced
Horizontal Vertical
Active..................1440 pixels 900 lines
Front Porch............. 64 pixels 3 lines
Sync Width.............. 32 pixels 3 lines
Back Porch.............. 224 pixels 6 lines
Blanking................ 320 pixels 12 lines
Total...................1760 pixels 912 lines
Scan Rate............... 54.72 kHz 60.00 Hz
Image Size.............. 331 mm 207 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #1 is Manufacturer specific data (not interpreted here)
Descriptor #2 is ASCII data:
LTN154BT
Descriptor #3 is Monitor name:
Color LCD
And im ringing in as one without the tinting issue
-----------------------------------------------------
0 | 00 FF FF FF FF FF FF 00 06 10 68 9C 00 00 00 00
1 | 0A 11 01 03 80 22 16 78 0A 50 C5 98 58 52 8E 27
2 | 25 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
3 | 01 01 01 01 01 01 9F 25 A0 40 51 84 0C 30 40 20
4 | 33 00 4B CF 10 00 00 19 00 00 00 01 00 06 10 30
5 | 00 00 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6 | 54 4E 31 35 34 42 54 00 00 00 0A 20 00 00 00 FC
7 | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 14
-----------------------------------------------------
Valid DDC block: checksum passed
EDID Version........1.3
Manufacturer........APP
Product Code........26780 (689C) (9C68)
Serial Number.......0
Manufactured........Week 10 of year 2007
Max H Size..........34 cm
Max V Size..........22 cm
Gamma...............2.20
DPMS Supported Features:
------------------------
Display type:
-------------
RGB color display
Input signal & sync:
--------------------
Digital
Color info:
------------
Red x = 0.595 Green x = 0.320 Blue x = 0.155 White x = 0.313
Red y = 0.345 Green y = 0.555 Blue y = 0.145 White y = 0.329
-------------------------------
Monitor Description blocks:
---------------------------
Descriptor #0 is Timing definition:
Mode = 1440 x 900 @ 60Hz
Pixel Clock.............96.31 MHz Non-Interlaced
Horizontal Vertical
Active..................1440 pixels 900 lines
Front Porch............. 64 pixels 3 lines
Sync Width.............. 32 pixels 3 lines
Back Porch.............. 224 pixels 6 lines
Blanking................ 320 pixels 12 lines
Total...................1760 pixels 912 lines
Scan Rate............... 54.72 kHz 60.00 Hz
Image Size.............. 331 mm 207 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #1 is Manufacturer specific data (not interpreted here)
Descriptor #2 is ASCII data:
LTN154BT
Descriptor #3 is Monitor name:
Color LCD
And im ringing in as one without the tinting issue
The Yellow Hue
15" MacBook Pro - Matte
I do have the "Yellow Hue" problem on the bottom 1/3 of the screen
DDC block report generated by SwitchResX for display
Color LCD
0 1 2 3 4 5 6 7 8 9 A B C D E F
-----------------------------------------------------
0 | 00 FF FF FF FF FF FF 00 06 10 68 9C 00 00 00 00
1 | 0A 11 01 03 80 22 16 78 0A 50 C5 98 58 52 8E 27
2 | 25 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
3 | 01 01 01 01 01 01 9F 25 A0 40 51 84 0C 30 40 20
4 | 33 00 4B CF 10 00 00 19 00 00 00 01 00 06 10 30
5 | 00 00 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6 | 54 4E 31 35 34 42 54 00 00 00 0A 20 00 00 00 FC
7 | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 14
-----------------------------------------------------
Valid DDC block: checksum passed
EDID Version........1.3
Manufacturer........APP
Product Code........26780 (689C) (9C68)
Serial Number.......0
Manufactured........Week 10 of year 2007
Max H Size..........34 cm
Max V Size..........22 cm
Gamma...............2.20
DPMS Supported Features:
------------------------
Display type:
-------------
RGB color display
Input signal & sync:
--------------------
Digital
Color info:
------------
Red x = 0.595 Green x = 0.320 Blue x = 0.155 White x = 0.313
Red y = 0.345 Green y = 0.555 Blue y = 0.145 White y = 0.329
Established Timings:
--------------------
Manufacturer Reserved Timings:
------------------------------
Standard Timing Identification:
-------------------------------
Monitor Description blocks:
---------------------------
Descriptor #0 is Timing definition:
Mode = 1440 x 900 @ 60Hz
Pixel Clock.............96.31 MHz Non-Interlaced
Horizontal Vertical
Active..................1440 pixels 900 lines
Front Porch............. 64 pixels 3 lines
Sync Width.............. 32 pixels 3 lines
Back Porch.............. 224 pixels 6 lines
Blanking................ 320 pixels 12 lines
Total...................1760 pixels 912 lines
Scan Rate............... 54.72 kHz 60.00 Hz
Image Size.............. 331 mm 207 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #1 is Manufacturer specific data (not interpreted here)
Descriptor #2 is ASCII data:
LTN154BT
15" MacBook Pro - Matte
I do have the "Yellow Hue" problem on the bottom 1/3 of the screen
DDC block report generated by SwitchResX for display
Color LCD
0 1 2 3 4 5 6 7 8 9 A B C D E F
-----------------------------------------------------
0 | 00 FF FF FF FF FF FF 00 06 10 68 9C 00 00 00 00
1 | 0A 11 01 03 80 22 16 78 0A 50 C5 98 58 52 8E 27
2 | 25 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
3 | 01 01 01 01 01 01 9F 25 A0 40 51 84 0C 30 40 20
4 | 33 00 4B CF 10 00 00 19 00 00 00 01 00 06 10 30
5 | 00 00 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6 | 54 4E 31 35 34 42 54 00 00 00 0A 20 00 00 00 FC
7 | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 14
-----------------------------------------------------
Valid DDC block: checksum passed
EDID Version........1.3
Manufacturer........APP
Product Code........26780 (689C) (9C68)
Serial Number.......0
Manufactured........Week 10 of year 2007
Max H Size..........34 cm
Max V Size..........22 cm
Gamma...............2.20
DPMS Supported Features:
------------------------
Display type:
-------------
RGB color display
Input signal & sync:
--------------------
Digital
Color info:
------------
Red x = 0.595 Green x = 0.320 Blue x = 0.155 White x = 0.313
Red y = 0.345 Green y = 0.555 Blue y = 0.145 White y = 0.329
Established Timings:
--------------------
Manufacturer Reserved Timings:
------------------------------
Standard Timing Identification:
-------------------------------
Monitor Description blocks:
---------------------------
Descriptor #0 is Timing definition:
Mode = 1440 x 900 @ 60Hz
Pixel Clock.............96.31 MHz Non-Interlaced
Horizontal Vertical
Active..................1440 pixels 900 lines
Front Porch............. 64 pixels 3 lines
Sync Width.............. 32 pixels 3 lines
Back Porch.............. 224 pixels 6 lines
Blanking................ 320 pixels 12 lines
Total...................1760 pixels 912 lines
Scan Rate............... 54.72 kHz 60.00 Hz
Image Size.............. 331 mm 207 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #1 is Manufacturer specific data (not interpreted here)
Descriptor #2 is ASCII data:
LTN154BT
LED LCD Manufactures
15.4 Matte 1440x900
15.4 Glossy 1440x900
15.4 Matte 1440x900
17 Matte 1920x1200
This is what we got so far on the SR MBP. 15.4" comes with either LG or Samsung panel, and 17" comes with LG. Some exhibit yellow tint, some don't , also notice the production date might be another factor. The glossy layer on the new LCD panel maybe the culprit?
15.4 Matte 1440x900
15.4 Glossy 1440x900
15.4 Matte 1440x900
17 Matte 1920x1200
This is what we got so far on the SR MBP. 15.4" comes with either LG or Samsung panel, and 17" comes with LG. Some exhibit yellow tint, some don't , also notice the production date might be another factor. The glossy layer on the new LCD panel maybe the culprit?
I didn't perceive the yellow cast on my display until I started using a calibrated profile. Now when I switch back to the Apple-supplied "Color LCD" profile, the cast is immediately obvious.
What I still don't notice is any additional cast at the bottom. My display is nearly perfect in this regard. I only notice a slightly lower brightness level at the bottom when my viewing angle is less than perfect.
I think it's hard to tell if the lower third is yellowish or if it's brownish due to that area being darker than the rest, or perhaps a little of both. Probably a little bit of both.
Mine has a slight yellow tint that is still visible at the bottom after calibration. The profile:
DDC block report generated by SwitchResX for display
Color LCD (1)
0 1 2 3 4 5 6 7 8 9 A B C D E F
-----------------------------------------------------
0 | 00 FF FF FF FF FF FF 00 06 10 67 9C 00 00 00 00
1 | 00 11 01 03 80 21 15 78 0A 9C 60 99 58 51 8E 26
2 | 12 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
3 | 01 01 01 01 01 01 9F 25 A0 40 51 84 0C 30 40 20
4 | 33 00 4C CF 10 00 00 18 00 00 00 01 00 06 10 30
5 | 00 00 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6 | 50 31 35 34 57 50 32 2D 54 4C 41 31 00 00 00 FE
7 | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 46
-----------------------------------------------------
Valid DDC block: checksum passed
EDID Version........1.3
Manufacturer........APP
Product Code........26524 (679C) (9C67)
Serial Number.......0
Manufactured........Week 0 of year 2007
Max H Size..........33 cm
Max V Size..........21 cm
Gamma...............2.20
DPMS Supported Features:
------------------------
Display type:
-------------
RGB color display
Input signal & sync:
--------------------
Digital
Color info:
------------
Red x = 0.600 Green x = 0.319 Blue x = 0.149 White x = 0.312
Red y = 0.345 Green y = 0.555 Blue y = 0.072 White y = 0.328
Established Timings:
--------------------
Manufacturer Reserved Timings:
------------------------------
Standard Timing Identification:
-------------------------------
Monitor Description blocks:
---------------------------
Descriptor #0 is Timing definition:
Mode = 1440 x 900 @ 60Hz
Pixel Clock.............96.31 MHz Non-Interlaced
Horizontal Vertical
Active..................1440 pixels 900 lines
Front Porch............. 64 pixels 3 lines
Sync Width.............. 32 pixels 3 lines
Back Porch.............. 224 pixels 6 lines
Blanking................ 320 pixels 12 lines
Total...................1760 pixels 912 lines
Scan Rate............... 54.72 kHz 60.00 Hz
Image Size.............. 332 mm 207 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #1 is Manufacturer specific data (not interpreted here)
Descriptor #2 is ASCII data:
LP154WP2-TLA1
Descriptor #3 is ASCII data:
Color LCD
DDC block report generated by SwitchResX for display
Color LCD (1)
0 1 2 3 4 5 6 7 8 9 A B C D E F
-----------------------------------------------------
0 | 00 FF FF FF FF FF FF 00 06 10 67 9C 00 00 00 00
1 | 00 11 01 03 80 21 15 78 0A 9C 60 99 58 51 8E 26
2 | 12 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
3 | 01 01 01 01 01 01 9F 25 A0 40 51 84 0C 30 40 20
4 | 33 00 4C CF 10 00 00 18 00 00 00 01 00 06 10 30
5 | 00 00 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6 | 50 31 35 34 57 50 32 2D 54 4C 41 31 00 00 00 FE
7 | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 46
-----------------------------------------------------
Valid DDC block: checksum passed
EDID Version........1.3
Manufacturer........APP
Product Code........26524 (679C) (9C67)
Serial Number.......0
Manufactured........Week 0 of year 2007
Max H Size..........33 cm
Max V Size..........21 cm
Gamma...............2.20
DPMS Supported Features:
------------------------
Display type:
-------------
RGB color display
Input signal & sync:
--------------------
Digital
Color info:
------------
Red x = 0.600 Green x = 0.319 Blue x = 0.149 White x = 0.312
Red y = 0.345 Green y = 0.555 Blue y = 0.072 White y = 0.328
Established Timings:
--------------------
Manufacturer Reserved Timings:
------------------------------
Standard Timing Identification:
-------------------------------
Monitor Description blocks:
---------------------------
Descriptor #0 is Timing definition:
Mode = 1440 x 900 @ 60Hz
Pixel Clock.............96.31 MHz Non-Interlaced
Horizontal Vertical
Active..................1440 pixels 900 lines
Front Porch............. 64 pixels 3 lines
Sync Width.............. 32 pixels 3 lines
Back Porch.............. 224 pixels 6 lines
Blanking................ 320 pixels 12 lines
Total...................1760 pixels 912 lines
Scan Rate............... 54.72 kHz 60.00 Hz
Image Size.............. 332 mm 207 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #1 is Manufacturer specific data (not interpreted here)
Descriptor #2 is ASCII data:
LP154WP2-TLA1
Descriptor #3 is ASCII data:
Color LCD
I am jumpin into this conversation a little late and skimmed over all the posts.
This is what I have concluded -
The new MBP LED screens with glossy finish are to blame. So if I am unhappy I can exchange it for a matte finish and probably be allright?
This is what I have concluded -
The new MBP LED screens with glossy finish are to blame. So if I am unhappy I can exchange it for a matte finish and probably be allright?
I don't think matte vs glossy had anything to do with it, althought I don't know.
Here's mine. Bought first day in store. Glossy, with the yellow tint on lower 3rd of screen.
DDC block report generated by SwitchResX for display
Color LCD
0 1 2 3 4 5 6 7 8 9 A B C D E F
-----------------------------------------------------
0 | 00 FF FF FF FF FF FF 00 06 10 68 9C 00 00 00 00
1 | 0A 11 01 03 80 22 16 78 0A 50 C5 98 58 52 8E 27
2 | 25 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
3 | 01 01 01 01 01 01 9F 25 A0 40 51 84 0C 30 40 20
4 | 33 00 4B CF 10 00 00 19 00 00 00 01 00 06 10 30
5 | 00 00 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6 | 54 4E 31 35 34 42 54 00 00 00 0A 20 00 00 00 FC
7 | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 14
-----------------------------------------------------
Valid DDC block: checksum passed
EDID Version........1.3
Manufacturer........APP
Product Code........26780 (689C) (9C68)
Serial Number.......0
Manufactured........Week 10 of year 2007
Max H Size..........34 cm
Max V Size..........22 cm
Gamma...............2.20
DPMS Supported Features:
------------------------
Display type:
-------------
RGB color display
Input signal & sync:
--------------------
Digital
Color info:
------------
Red x = 0.595 Green x = 0.320 Blue x = 0.155 White x = 0.313
Red y = 0.345 Green y = 0.555 Blue y = 0.145 White y = 0.329
Established Timings:
--------------------
Manufacturer Reserved Timings:
------------------------------
Standard Timing Identification:
-------------------------------
Monitor Description blocks:
---------------------------
Descriptor #0 is Timing definition:
Mode = 1440 x 900 @ 60Hz
Pixel Clock.............96.31 MHz Non-Interlaced
Horizontal Vertical
Active..................1440 pixels 900 lines
Front Porch............. 64 pixels 3 lines
Sync Width.............. 32 pixels 3 lines
Back Porch.............. 224 pixels 6 lines
Blanking................ 320 pixels 12 lines
Total...................1760 pixels 912 lines
Scan Rate............... 54.72 kHz 60.00 Hz
Image Size.............. 331 mm 207 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #1 is Manufacturer specific data (not interpreted here)
Descriptor #2 is ASCII data:
LTN154BT
DDC block report generated by SwitchResX for display
Color LCD
0 1 2 3 4 5 6 7 8 9 A B C D E F
-----------------------------------------------------
0 | 00 FF FF FF FF FF FF 00 06 10 68 9C 00 00 00 00
1 | 0A 11 01 03 80 22 16 78 0A 50 C5 98 58 52 8E 27
2 | 25 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
3 | 01 01 01 01 01 01 9F 25 A0 40 51 84 0C 30 40 20
4 | 33 00 4B CF 10 00 00 19 00 00 00 01 00 06 10 30
5 | 00 00 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6 | 54 4E 31 35 34 42 54 00 00 00 0A 20 00 00 00 FC
7 | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 14
-----------------------------------------------------
Valid DDC block: checksum passed
EDID Version........1.3
Manufacturer........APP
Product Code........26780 (689C) (9C68)
Serial Number.......0
Manufactured........Week 10 of year 2007
Max H Size..........34 cm
Max V Size..........22 cm
Gamma...............2.20
DPMS Supported Features:
------------------------
Display type:
-------------
RGB color display
Input signal & sync:
--------------------
Digital
Color info:
------------
Red x = 0.595 Green x = 0.320 Blue x = 0.155 White x = 0.313
Red y = 0.345 Green y = 0.555 Blue y = 0.145 White y = 0.329
Established Timings:
--------------------
Manufacturer Reserved Timings:
------------------------------
Standard Timing Identification:
-------------------------------
Monitor Description blocks:
---------------------------
Descriptor #0 is Timing definition:
Mode = 1440 x 900 @ 60Hz
Pixel Clock.............96.31 MHz Non-Interlaced
Horizontal Vertical
Active..................1440 pixels 900 lines
Front Porch............. 64 pixels 3 lines
Sync Width.............. 32 pixels 3 lines
Back Porch.............. 224 pixels 6 lines
Blanking................ 320 pixels 12 lines
Total...................1760 pixels 912 lines
Scan Rate............... 54.72 kHz 60.00 Hz
Image Size.............. 331 mm 207 mm
Border.................. 0 pixels 0 lines
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #1 is Manufacturer specific data (not interpreted here)
Descriptor #2 is ASCII data:
LTN154BT
Ok, I've tried to take some pictures here.
The first one is the default ColorLCD profile underneath my desktop Samsung 215Tw :
The second one is using the colorsync profile posted on macrumors underneath the samsung display:
The third picture uses the calibrated profile and try to show the difference between whites at the top and the yellowish whites at the bottom, especially left half. It's VERY hard to captures this and what I did capture does not quite show what it looks like. In real life, there's more of a very translucent yellowishness' to that area. Now when I look at the photo it's really difficult to see - damn. it's easily visible in reality.
The first one is the default ColorLCD profile underneath my desktop Samsung 215Tw :
The second one is using the colorsync profile posted on macrumors underneath the samsung display:
The third picture uses the calibrated profile and try to show the difference between whites at the top and the yellowish whites at the bottom, especially left half. It's VERY hard to captures this and what I did capture does not quite show what it looks like. In real life, there's more of a very translucent yellowishness' to that area. Now when I look at the photo it's really difficult to see - damn. it's easily visible in reality.
As I wrote: the first picture uses the Apple default ColorLCD profile, the second and third pictures use the profile posted here https://forums.macrumors.com/threads/311587/
That profile makes everything look good to me, but the lower part stays a yellowish tint
Thanks a lot PDE that's a proof at least and thanks for the data about manufactures from rest of you, but unfortunatly it shows somewhere yes and somewhere no....
I noticed that LED in new SR MBP are 3-5mm higher placed in frame then the C2D MBP. Question to think, it's possible to have the bottom part be some kind of inner reflection from plastic?
Another question to think what is the layers of LCD Display?
-Antireflection coat
- Some kind of plastic glass
- Liquid crystals
- some electric wireframe
- another plastic glass
- matte sheet?
- led backlight?
The bottom of the screen is usually hotter then the top, can that be issue? Can hot effect the LEDs?
I know it's question for engineers but i'm just curious
(when I was saying in Apple Store I'm not alone seeing this issue and pointing to this forum, manager in duty said: "I don't believe these forums to much, they also claim that Elvis is alive..."
)I have a 2.2 glossy and I cannot find the yellow tint on my display. That's not to say there aren't a few things that bother me.
I noticed some color banding while activating Front Row. No big deal at all, I really couldn't careless about that at this point.
I noticed there is an allusion of vertical banding whenever I get about 16" from the screen and shake my head (like saying "no".) Not that bothersome as I'm usually not shaking my head at the computer, but I do notice it every so often.
Other than that the display is amazing. I love the glossy screen and am glad I chose it. i can actually use the computer outside and glare is not an issue. The brightness is enough to burn out a cornea.
yes, i noticed that when I stand about 26 inches behind my screen slightly to the left and do cartwheels there is slight vertical color banding as well.
if it's yellow completly the whole screen just go to display and calibrate it under the color tab.
if it's yellow in bottom 1/3 you can't do anything, but try change the viewing angle....it may go less or more....but will be there still