Why do my still pictures taken outside have a blue tint on them? I think it must be a setting that is messed up but I don't know how to adjust it.

Go to menu, picture and adjust as desired

My hisense tv got blue tint any adjustments can be done on the board inside the tv

You didn't specify the model of your camera so I can't be too precise here.
Since it does appear to be a white balance issue, I'd say you've got the white balance set too warm. The camera compensates by adding blue to the scene and hence you get the blue tint. Either set the white balance to match the scene, or else set it to "Auto".

Hello; The red probably got low over a long period of time due to only one thing. The CRT/ Picture tube is getting weak and cost much more than the set sold for. The adjustments may only help a little and the set will get worse. These adjustments are done on your remote control with service menu accessed. You will need a Service Manual for instructions to do this, but I think it's time for another set. John

Artificial light is a different colour than daylight. Our eyes compensate, so we don't notice it much. Digital cameras can compensate too, but whether they do or not depends on the settings. The setting you want to investigate is colour balance. If this is set to daylight, it will give an orange cast to pictures taken in tungsten lighting, and a greenish cast to pictures taken in fluorescent light. If it is set to artificial light, pictures taken in daylight will have a bluish cast. The best setting for most people is Auto. That will let your camera decide, and usually it will get it about right.

i think is the blue mirror in side the tv...it has 4 mirrors inside

see if there is a "default" option, if not set everything back to the middle, if the colors are still off you sure its not the convergence?
most big screens allow you to change "color temperature" it's like a default adjustment for 3 different brightness levels.... ie...COOL, WARM picture will show obvious changes in brightness

Colorimetre HCFR software
AVC HD 709 calibration disk
Spyder2 colorimeter (I know most prefer the Eye-One meters, but the Spyder2 was available from my job at no cost)

Here are the settings:

PS3 Blu-Ray player

Output Format (HDMI): Y Pb/Cb Pr/Cr (important!!! NOT RGB output)
BD 1080p 24hz Output (HDMI): On (this TV can reproduce video at 48hz for accurate 2:2 pulldown)
Y Pb/Cb Pr/Cr Super White (HDMI): On (not sure if this matters)

42LG50 Settings

Aspect Ratio: Set By Program (Personal Preference)
Picture Mode: Expert 1
Backlight: 50 (Personal Preference)
Contrast: 54
Brightness: 54
Sharpness: 40 (Personal Preference)
Color: 50
Tint: 0

Fresh Contrast: Off
Noise Reduction: Off
Gamma: Medium
Black Level: Low
Real Cinema: On

White Balance: Warm
Method: 10 Point IRE

10 (-3,8,-16)
20 (15,24,-21)
30 (20,36,-22)
40 (3,19,-40)
50 (8,34,-41)
60 (10,50,-20)
70 (-5,50,-8)
80 (-16,50,18
90 (-14,50,30)
100 (-22,38,21)

Red Color: -3
Red Tint: 0
Green Color: 10
Green Tint: 0
Blue Color: 14
Blue Tint: 0
Yellow Color: 0
Yellow Tint: 1
Cyan Color: -11
Cyan Tint: 0
Magenta Color: 0
Magenta Tint: -2

Take time to get used to the settings, you may think the screen looks dull at first. The truth is most people have way too much contrast on their TVs.
These settings will also work for Cable or Dish hookups, in which case you may change the Noise Reduction option to Medium to reduce signal noise.

OR....

2POINT IRE

Backlight: 65
Contrast: 55
Brightness: 45
Sharpness: 50
Color: 45
Tint: 0

Fresh Contrast: Off
Noise Reduction: Off
Gamma: Medium
Black Level: Low
Real Cinema: On

White Balance: Warm
Method: 2 Point

Red Color: 3
Red Tint: 0
Green Color: 9
Green Tint: 2
Blue Color: -1
Blue Tint: 0
Yellow Color: 6
Yellow Tint: 5
Cyan Color: -1
Cyan Tint: 1
Magenta Color: 2
Magenta Tint: -1

yeah you need a tech to adjust the bias of the picture tube if you are lucky that fix it other wise the blue picture tube is bad

Your picture tubes are weak or you need to do whats called a grey scale adjustment. In other words you need to put on a totally B&W movie or test pattern and adjust the red , green, and the blue screens to the best B&W you can get. Then you need to adjust the CRT drives to the best grey scale. If you do not know what this is, I'm afraid you should call out a pro to assist you with this alignment, as if you go messing around, and do not know what you are doing, you can make the set landfill material. Not for a novice to do. Good Luck