Screen is on but picture dose not show... cables connected
If you look closely the image is visible but very dimmed. if flashlight pressed against screen it lights up the picture better. Brightness and contrast were turned to max and did nothing. Everything else works properly just screen is dimmed to the point were you have to (HEAVILY) strain your eyes to see.
If any solutions please post.
(Picture below is with flashlight pressed up against screen.
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Re: Screen is on but picture dose not show... cables...
Solution, replace monitor with a new one.
I have found, at my shop, that getting parts for these things can be pricey and by the time I charge labor as well, could just buy a new one.
Probably a bad internal power supply or the inverter that powers the bulb(s) went out, which is sometimes built in with the power supply itself. If, and I stress IF, the parts are available, be prepared to pay more than its worth.
Pick up a new one, shop around on different brands. Some manufacturers offer 3 year warranties. ;)
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Is this an LCD tv? You didn't include a model number so i can't really answer, but if its an LCD tv then try shining a flashlight on the screen at an angle, can you see what looks like an image on the screen with the flashlight? Its pretty common for the backlighting in a LCD to fail causing it to appear as if there is no picture but the picture is there just no lighting to make it visible. If there is still no picture with a flashlight up close looking at the screen it could be many things, failed capacitors in the power supply thats preventing the screen from coming on, a bad mainboard that the video failed but the audio still works, lots of options here.
If you look very close at your screen (might need flashlight here), do you see the picture as a black screen? If so, your backlight may have died on the panel. Replacing the inverter board will fix that right up unless the tube (lightbulb) has burnt out instead of the board. Both are replaceable.. Check it out.
With the tv on press a bright flashlight against the screen. Look for a moving image around the flashlight. This show an image in getting to the screen. You need a back light to see it.
You need a new back light inverter board.
IF YOU KNOW HOW TO WORK WITH ELECTRONICS REPAIR(replace board ) or have a friend with knowledge/skill you can fix it.
You did not give a make and model of the set so I am not able to suggest a source.
Check it on an external monitor to see if the video card is good. If the external works, then the LCD or backlight is bad. Look with a flashlight. If there is a very dim image, then it is probably the backlight. If no image, then the LCD.
When you say that your laptop "screen is dim", do you mean that there is no light coming from your screen, but you can see images on it? or do you mean that there is light coming from the screen, just a very little amount?
If you can images, but NO light is coming from the screen, then the LCD backlight is dead, and it needs to be replaced.
If there is light coming from the screen, but it's very dim, then you'll need to find the screen brightness adjustment keys on your laptop. This is usually two keys. The first one is normally in the lower left corner of your laptop and should be a different color - like blue or purple, and will be labeled something like "Fn". The second key is normally in the function key row (F1, F2, F3, etc...) and has a symbol on it that looks like a sun or burst of light with an arrow. There's usually one for "brightness UP" and one for "brightness DOWN". Hold down the Fn key, and then press the "Brightness UP" key a few times to see if the screen brightens up. Good luck.
If you've tried the backlight and brightness from the menu, you may have a more serious problem. Try this;
Take a bright flashlight and place it against the LCD screen. See if you can see an image around the edge of the flashlight. If you see an image, you probably have one of three problems;
1) The inverter board is bad.
2) CCFT (cold cathode fluorescent light(s)) are dead 3) Power supply to inverter board is bad.
This is the way how to examine where the problem is. If the screen is going dark. You
have to check that you can see the image on screen by shining a flashlight into
the screen, not directly but find the best angle to the screen and take a look
very closely. If you can see the icons (Power on both cpu and monitor), there
will be a minor problem. Like me, I can see window image using flashlight and
check lamps inside. Some of them were broken. If you cannot see any icon on the
screen. I would say that there are some problems with inverter board. If you
have soldering tool and want to fix it by yourself, check the caps first. It
may cause this problem. Some caps might show leaking or dark spot on the board
because of too high temp. If you don't have soldering tool, you better go get a
technician to do so.