Is the color filter going out?sometimes i have a red screen
Some times the screen is red.When I bought it it had the problem but the tech. said it was a personal setting.He got it to go off.He also said that it was a conection problem.Had a screen saver on walked into the room and the screen was red.Had to turn the swithch off in the back to fix.Then one time windows was loading and it was red,but when the desk top came up it was back to normal.So, is this a conection problem or is the color filter going out?
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Re: is the color filter going out?sometimes i have a red...
The most common cause of a red or pnik tint to the picture is a weak or failing backlight tube. LCD monitors use very small florescent tubes to provide the backlight and when they start to go out the output red or pink tinted light not white. You can replace the bulbes but in most cases it is not worth the trouble. You should chack the date on the back of the monitor, if it is less than 3 years old then contact Samsung for a warranty repair, if older than 3 years then get a new monitor.
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projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.
Common Problem #1) Convergence has gone out
Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.
Common Symptoms include....
Screen looks 3D
Colors don't line up
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed or warped.
TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.
Common Problem #2) CRT Fluid is Cloudy
Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.
The red convergence IC has failed. There are I believe 3 total convergence IC in your tv. The prefix for all three is STK392-xxx. If you can solder you can try and replace yourself otherwise you need a tv tech. With Hitachi's sometimes some critical resistors will change value as well and have to be replaced with exact equivalents. Sorry wish it was an easy solution..
If one color goes out of control, the TV will auto turn off for safety reasons. Sounds like a red bias resistor has burned out. A tech will be needed to trace this problem. Sometimes there is a knob behind the front TV speaker panel for adjusting the color bias levels. You could try to mess with it if you are able to find it. I would just get a tech. Could be a cheap repair.
Is this happening when you are switching between color tempature (Normal,Warm, and Cool). You wont be able to access it in normal menu.
You will have to accesss the service tech menu. enter "062596 then info", if u enter the code correct at bottom of screen you will see a warning menu only access by a service tech , continue in menu you will see on main option screen "alignment" enter this. Go to white point adjust the three temp settings (Normal, Warm, and Cool) settings as follows.
Color Temp. I Red I Green I Blue I
Cool 122 120 121
Normal 125 118 108
Warm 127 110 75
( These are factory specs u can tweak them to your own perference)
After u set these press left on remote and exit back to main service menu and store these setting before turning TV off set these settings
I see this alot when Philips manufactured the TV. The did store the settings.
Yes you have a problem in the red crt driver board. Most likely the driver transistor is failing. This is a component level repair, so if you have no experience with TV repair, play it safe and call in a trained tech to assist you in this matter. Good Luck