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Whrn i have the tv on the picture is very faint i cant make it any brighter

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Posted on Nov 19, 2014

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My Samsung TV has only a faint picture and full sound.


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Jan 26, 2016 | Samsung Televison & Video

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How do I get the picture on my tv back?


It's could be one of two things (well, generally speaking).

1.) inverter board. You can check this by putting the TV on something that's broadcasting or playing (a channel or an input playing a DVD or something like that, where you can hear the sound) and then take a flashlight and put it directly on the screen so the light is pointed at the screen. Put it as close as you can, it should be touching the screen so you can't see light coming out the side of the flashlight. Can you see the picture faintly moving normally? This usually works on something that's brighter and has lots of onscreen action, I wouldn't choose a documentary on deep space or something like that for this test. But if you can faintly see the picture moving as it normally would it's most likely your inverter board gone bad.

2.) main board. If the other test fails it's probably the main board that's gone bad.

Either of these you might be able to find a replacement on eBay with a tutorial on how to swap out the components on YouTube. If you believe this may be beyond the skillsets you posses, then you may just consider buying a new one as technicians can be expensive and these TVs are getting cheaper and cheaper every day.

good luck!

Oct 20, 2014 | Panasonic Televison & Video

1 Answer

Hi, I had a problem with my Sony CRT television.


The faint background lines are vertical flyback lines. Start your diagnosis by turning the brightness and contrast controls to minimum and view the screen in a darkened room. If you can now see a raster with horizontal lines visible then it is likely that the tubes A1 screen voltage is excessive. The screen voltage is usually within the range of 400v to 600v. Adjustment for this is often part of the flyback transformer. Check all high value resistors
in the screen and focus circuitry. Some of these reistors may be
built into the flyback transformer. As the picture gets brighter the beam current increases, this will eventually cause the X ray protection circuits to trigger shuting off the set. A fault in the video drive circuits to the cathodes of the tube will cause similar symptoms but usualy results in a predominance of one colour, ie
bright red, blue or green raster with flyback lines.

Oct 20, 2013 | Sony KP-53HS10 TV

1 Answer

My tv ha as no picture or sound but the green light come on and flashes


hi. sounds like inverter to me. if you cant see a back-light then tilt the tv into lie light and if you can see a faint picture but its not lighting up then it needs a new inverter..

Jun 08, 2011 | Sanyo 42 in. LCD TV

1 Answer

I can hear the tv but cant see it


Video circuit problem.

Check whether you get a filament glow in the picture tube neck. It will be faint. If OK,

Just place your hand near the front of your screen, when TV is on. If EHT is generated you will feel the static effect on face plate on the glass. Your hairs will drawn towards the picture tube. No EHT, no such effect will be there. Refer trouble shooting procedures.

Mar 29, 2010 | Sylvania 6419TA 19" TV

1 Answer

Red line on screen


yes it can be fixed , it is a IC chip failure or another component that is in the circut

Oct 07, 2008 | Philips 37PF7320A 37 in. HD-Ready LCD...

1 Answer

Dark screen/picture.


This 30" flat screen TV set may have a problem in the high voltage circuit of the TV set. You may be able to adjust this by taking off the back of the TV set. Look for the block where the large red wire runs up to the top of the picture tube. On this block will be two controls. one will say screen and one will say focus. Try and slowly turn the control that says screen or S on it clockwise and see if you can make the picture brighter. Turn up the control till you just start to see faint lines in the picture, then back the control down till the lines go away. If the picture does not come up when you turn this up, and all you get is a blank screen, you will need to have this set repaired by a qualified repair person. Good Luck

Jul 14, 2007 | Sanyo HT30744 TV

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