Question about Emerson EWF2703 27" TV

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The picture is to bright

I have the brightness turned all the way down and the picture is to bright. When I turn brightness up it shuts down and will not stay on unless I hit Game button and turn brightness down.

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Re: The picture is to bright

If you are a tech open the tv and turn down the brightness from off the flyback screen adjustment if that does not work then the flyback will have to be is defected.good luck

Posted on Apr 19, 2007

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SOURCE: The picture is to bright

problem in high voltage area, consult an expert

Posted on Jun 02, 2009

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Whenever the screen gets bright my tv turns off

Your TV goes out as you increase its brightness I thinks. It won't go out till a certain limit of brightness and will go out after that. You just note the level of brightness when your TV shut downs. If it is from the start itself, it will be due to problem in the ABL [Automatic Btightness Limiter] section, which is at the printed circuit board and has complex circuits related with it, that you can't rectify yourself, as it needs some skill and ability to follow the schematic diagram of your TV, and some solering concepts, and you should have to go for an experienced technician.
If it shuts somwhere near when the brightness control comes to its middle or so, it is due to an advance in the screen voltage, that you can adjust it at home. For that you should open the back cover of your TV. All care and precautions must be taken when we works with an electrical equipment. After open the back cover you just locate where the screen adjustment control is. It may be sometimes in the Line Output Transformer, other wice known as [LOT], or its picture tube base card itself soldered into. If it is with 'LOT' it will be marked ans "Screen", and will be an adjustable potmeter. It can be adjusted with the help of a screw driver of even by bare hand; if you have dare and experience to do. If it is in the picture tube basc card, there will be a mark printed as 'screen'.
Keep the tv opened, switch on it. Wait for some time, say upto 20 seconds, after the screen on your tv is alive, advance its brightness control to the cut point. Just do it a little reverse and see whether the screen comes alive or not. If not, switch off the TV again. Reduce the screen voltage a liitle behind by turning its preset to a little, so that you can see the screen again. Then advance the brightness control and see whether the screen cuts off this time or not. if it cuts off this time also, the fault is in the above said ABL circuit. You should get it repaired by an experienced tecnician. never use the TV at this condition for more. It may effect the emission of the picture tube. ok.

Oct 27, 2010 | Sony KV-27S45 27" TV

1 Answer

The picture is really dark even though I have the brightness set to a hundred percent

brightness isn't brightness, its technically called white level, as for the fault, probably a power supply issue, also turn the brightness down as having it set to high can cause long term damage to the tube.

Apr 18, 2010 | Hitachi 43FDX01B TV

1 Answer

The picture is to bright

problem in high voltage area, consult an expert

Jun 02, 2009 | Emerson EWF2704 TV

2 Answers

Turn on pic turns red with thin bright red horizontal lines

Sorry to say, but that's usually the sign of a bad picture tube. One of the elements inside the tube shorts and you see the picture you describe, and the set shuts down due to high voltages getting to places it shouldn't. There's no solution except picture tube replacement, and that is uneconomical. You're better off replacing the TV when the tube goes bad.

Mar 31, 2009 | Toshiba Standard (CRT) Televisions

1 Answer

Turns itself off

screen control. pict to bright. normal to shut down. when this happens. ****** screen control.

Nov 19, 2008 | Zenith B25A10Z 25" TV

1 Answer

No Picture Has a bright horizontal line with off white & gray vertical bars

The Problem Philips 27TS54 c101 27B800-7562 White horizontal line in the center of the screen. Color is present in the first half inch of the leftist corner of the horizontal line.
Audio is present and controllable. The green power led from a cold non plugged in state remains solid until CRT goes to ignite. A click is heard then the green power LED blinks.
I found service manual diagram of repair part or parts and install instructions
I request any info or tips you might have pertaining to this problem
P.S. 25”-27” CRT board APT187

Possible Answer Posted by PEE_WEE 4/28/2005
On the CRT circuit board(picture tube), you will find R3340, which is a 10 ohm 1/3w resistor. The location of the resistor is printed on the bottom of the ckt board. It is burned open, replace with a 10 ohm 1/2w resistor. This will solve your problem. The original resistor was sized too small, should have been a 1/2 watt. This resistor is mounted standing up on ends. Mount the replacement resistor the same way. Be careful and don't get the circuit trace too hot and damage the circuit trace. (it's very small) The resistor is located on the crt(cathode ray tube), pcb(printed circuit board) socket. The resistor supplies apx +200v to the collectors of the r, g, b, video driver transistors. If this voltage is low, it causes excess brightness(excess beam current), causing the set to "shut-down". If the shut-down is too quick, you will NOT see the excess brightness, because the picture tube has not warmed-up enough to display anything on the picture tube. To see if the set displays "excess brightness", you will need to turn the set "on" about 5 to 10 times. This will heat the picture tube enough to display "excess brightness", IF that is the PROBLEM. Of course, there are OTHER defects that will cause a tv to shut down. There are built in safety circuits, that will "activate" if excess voltage/current or heat is detected anywhere in the set.

My resistors are not numbered the same on my crt board APT187. GSM 02/20/2008

Dec 31, 2007 | Samsung TXK2754 27" TV

1 Answer

Brightness of picture

If you feel good about opening your set then you can try this: Look for the flyback (high voltage) transformer, with the thick red wire which goes to the top of the picture tube. There are 2 controls on the flyback transformer, focus (top) and screen (bottom)Turn the brightness and contrast all the way down and then increase the screen control until you see retrace lines, and then back it down until those lines just vanish. Return the brightness and contrast to normal and adjust the focus control, if necessary, for a nice sharp picture. Let me know if that brings your brightness back.

Aug 21, 2007 | JVC AV-27D104 27" TV

1 Answer

I have sound but no opicture

When you replaced the flyback the new flyback is shipped with the screen and focus controls set at minimum. These are the 2 controls on the flyback itself. Turn the set on and let it warm up a minute, then slowly turn up the screen (bottom) control with a small flat-head screwdriver. When the picture is around normal brightness, adjust the focus (top) control until the picture is nice and sharp. Then, turn the brightness and contrast all the way down and set the screen control until you can just see the picture, just above the point where the picture vanishes. Reset the brightness and contrast settings and your picture will be back to perfect.

Jul 02, 2007 | RCA F36650 36" TV

1 Answer

RCA 32V420T 32" TV

This RCA set uses the CTC187BD chassis. Look on the back of the set and to the right of the cable connector you will see 2 controls sticking out, one on top of the other. The top control is for focus and the bottom one is screen, or overall brightness. If these controls have been turned clockwise then you will have a bright, fuzzy picture with white lines (retrace lines) through it. Tune in a channel with white letters on the screen and turn the top (focus) control until the letters are crisp and sharp. Go into the menu and turn the contrast and brightness all the way down, and then turn the bottom control (screen) until you can just see the picture, just above the point where the picture is too dark to see. Go back into the menu and reset the contrast and brightness and the picture will be back to perfect.

Jun 28, 2007 | RCA 32V420T 32" TV

2 Answers

Dark picture (HELP)

Open up the back of the set but be very carefull. Notice a large black block with a large red wire that runs up to the picture tube. on one side of that large block where the thick red wire is comming out of are two controls, one should be marked focus or F and one should be marked screen or S. With the set operating normally and not touching anything else, slowly turn the control marked screen or S clockwish till the picture gets bright enough. If you go too bright the set will shut down or you see small thin white lines so back down on the control. then touch up the focus and your good to go. good Luck.

Dec 01, 2006 | Toshiba 32A42 32" TV

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