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My sharp of-40cff5221k tv B40CF5221KB14B is the serial number for my tv. It intermittently turns to a random selection of colors on screen. No rhyme no reason to it.

It happens after 5 minutes sometimes and sometimes after 2 hours. Is this a fault or is it a software issue?

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6ya6ya
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Posted on Jan 02, 2017

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salt56
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SOURCE: Akai dvd/vhs/MP3/tv combo CFTD2785

The only thing I can help you with is a phone number
1-800-627-4368.

Posted on Jan 05, 2008

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SOURCE: Sharp aquos lcd screen goes blank

i was having these same problems with the screen going black, and i found that when i hit the back of my tv it would work sometimes. so, i improvised on some of the advice on this page and so far no problems. here is what i did (its very easy):

1. lay the tv on the floor and take off the back panel. (i think 12 screws)

2. on the right side of the tv (as you are looking at the back) you will notice a large metal covering that is held in place by 6 screws. unscrew these and remove the metal cover.

3. you will notice that the three screw holes on the left side of the board have some sort of metal or solder around them, in sort of a star pattern. when i looked closely i noticed that most of the metal (solder) was tarnished, or kind of blackened. (this must mean that the ground screws werent getting a good connection and this would explain why it would work sometimes when i hit it because it would vibrate the screws enough to get a good connection! )

so, take a pencil eraser and erase all the black or tarnish off the metal surrounding the screw holes. thats it! (to be safe i took some sandpaper and cleaned up the screw holes on the back of the metal covering, but i dont know if that was necessary)

at this point i followed another gentleman's advice to do a hard reset. this involved unplugging the 8 connections although i dont know if this was really necessary because i believe my problem was a ground issue. i did it just to be safe. his advice is on this site if you want to do this step.

4. i put everything back together and it worked! i performed a soft reset at this point which puts your tv back to factory settings. just go to menu>setup>reset>return to factory settings? yes
this will turn your tv off and back on. that's it. so far so good for me.


Posted on Dec 18, 2008

  • 1 Answer

SOURCE: Picture Problem

I have the same situation. Called my repairman, who knew exactly that it needed a "570 kit" . It will be repaired this week. Cost $360

Posted on Apr 21, 2009

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SOURCE: Horizontal and vertical lines on the screen

i do no know take it back to the shop you got it from

Posted on Jun 04, 2009

  • 10 Answers

SOURCE: Sharp LC-46SB54U Keeps losing picture intermittantly

i believe your tv is getting overheated, possibly from dust getting onto the electronic components inside. or the inverter board for the lcd panel inside is going bad, alot of times it is the capacitors on the lcd inverter board going bad.

Posted on Jun 12, 2009

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LOOKING FOR PICTURE SETTING SAMSUNG MO.NO.LN-T5265F


This may help you...you can also get an owners manual free on line.


English - 23
Using Automatic Picture Settings
Your TV has Three automatic picture settings ("Dynamic", "Standard", "Movie") that are preset at the factory.
You can activate either Dynamic, Standard, Movie by making a selection from the menu.
1. Press the MENU button to display the menu.
Press the ENTER button, to select "Picture".
2. Press the ENTER button to select "Mode".
Press the ??² or ??¼ buttons to select the "Dynamic", "Standard", "Movie" picture
setting. Press the ENTER button.
?³ Choose Dynamic to increase the clarity and sharpness of the picture.
?³ Choose Standard for the standard factory settings.
?³ Choose Movie for a natural Image without picture enhancements.
3. Press the ??² or ??¼ buttons to select "Contrast", "Brightness", "Sharpness",
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4. Press the ??? or ??? buttons to decrease or increase the value of a particular item.
For example, if you select "Contrast", pressing the ??? button increases it.
Press the ENTER button.
Press the EXIT button to exit.
• When you make changes to Contrast, Brightness, Sharpness, Color, Tint(G/R)
the OSD will be adjusted accordingly.
• When in PC mode, Tint, Sharpness, and Color are not available.
Press the P.MODE button on the remote control repeatedly to select the desired
picture mode.
Picture Control
Move Enter Return
Mode : Dynamic ???
Contrast 1 00
Brightness 50
Sharpness 85
Color 55
Tint G 50 R 50
Balck light 1 00
??¼More
TV Picture
Move Enter Return
Mode : Dynamic
Contrast 1 00
Brightness 50
Sharpness 85
Color 55
Tint G 50 R 50
Balck light 1 0
??¼More
TV Picture
Dynamic
Standard
Movie
Move Enter Return
Mode : Dynamic ???
Contrast 1 00
Brightness 50
Sharpness 85
Color 55
Tint G 50 R 50
Balck light 1 0
??¼More
TV Picture
50
??² Con trast ??¼
Move Adjust Return
English - 24
Adjusting the Color Tone
You can change the color of the entire screen according to your preference.
1. Press the MENU button to display the menu.
Press the ENTER button to select "Picture".
2. Press the ??² or ??¼ button to select "Color Tone", then press the ENT ER button.
3. Press the ??² or ??¼ button to select "Cool2", "Cool1", "Normal", "Warm1",
or "Warm2".
Press the ENTER button.
When the picture mode is set to Dynamic or Standard, Warm1 and Warm2
cannot be selected. Movie mode is only available.
Move Enter Return
??²More
Color Tone : Cool2 ???
Detailed settings ???
Size : 16 : 9 ???
Digital NR : Low ???
Active Color : On ???
DNle : On ???
Reset : OK ???
TV Picture
Move Enter Return
??²More
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Detailed settings
Size : 16 : 9
Digital NR : Low
Active Color : On
DNle : On
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Cool1
Normal
Warm1
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3. Press the ??? or ??? button to decrease or increase the valueof the backlight
brightness.
Press the ENTER button.
Press the EXIT button to exit.
Move Enter Return
Mode : Dynamic ???
Contrast 1 00
Brightness 50
Sharpness 85
Color 55
Tint G 50 R 50
Balcklight 1 0
??¼More
TV Picture
5
??² Balcklight
??¼
Move Adjust Return
Move Enter Return
??²More
Color Tone : Cool2
Detailed settings
Size : 16 : 9
Digital NR : Low
Active Color : On
DNle : Off
Reset : OK
TV Picture
OK
Cancel
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1. Press the ??² or ??¼ button to select "Reset", then press the ENTER button.
Press the ??² or ??¼ button to select "Cancel" or "OK" then press the ENTER button.
Press the EXIT button to exit.
Each mode can be reset.

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