Question about Samsung TXK2754 27" TV

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

The tv has sound but no picture just a bright horizonal line 1/3 of the way from left side of tv and off white and grey vertical bars but not rolling. When I turn the tv on the green light in front blinks then goes out the tv tones and then you see the screen i was talking about.

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  • didasapa Apr 06, 2008

    My TV is 27 " and branded as SEARS Canada model
    57-14367 but it is actually a JVC TV. For sometime I had a few gray horizontal
    lines running across the TV on about 2" top part of the screen but picture
    was ok for most part except that in the top part behind the gray lines it was
    somewhat distorted. Suddenly today, the screen has no picture but only a bright
    horizontal bar across the screen.




    Can somebody inform what may be the problem and how to resolve it?





    Thanks in advance.

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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
HTTP://WWW.servicemanuals.net/results.aspx?type=SM&brand=100&model=27ts54
I request any info or tips you might have pertaining to this problem
Thank-you
Sincerely
Gmyers@sbcglobal.net
2/20/2008
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.

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

Posted on Feb 21, 2008

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