Question about Sony FD Trinitron WEGA KV-32FS100 32" TV

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Solid green screen

While watching tv, I lost the picture on direct tv. At the same time, the screen went to a solid bright green. I've checked to make sure it's not on video. There are no games connected to it. Thanks

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Re: Solid green screen

Is the green really bright with small white lines in the screen?? If it is its probably a shorted picture tube. That is if you still have sound. If you have no sound its probably a power supply problem in the sweep section of the set. This is not a repair for a consumer to do as its a solid state set and there are no user serviceable parts inside these sets. Get a service person to assit you with this repair. Good Luck

Posted on Jul 01, 2006

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I am trying to adjust the brightness on this circa 1980 floor model solid state tv

The contrast setting controls the relation between the light and black areas of the screen. If the light areas are too bright and are losing details, press the CVOL button; if the picture is gray and lacks contrast, press the VOLB button

The brightness setting controls the overall amount of light in the picture. If the picture is too bright, press the CVOL button; if the picture is too dark, press the VOL B button

The color setting controls the intensity of color.

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I have a Panasonic TV CT-34WX50 every time I change channels

it sounds that have problem in the chroma board ( video board ) a small board that hooked up in the neck of the picture tube. if the color is greenish the cause is dead in red video driver transistor or open resistance. hope this can help good luck.

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Good day.
Your unit is still worth. It may be a caused of loose contacts along the circuitry. It can be remedied by resoldering the terminals particularly the chroma section and the crt circuit.


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1 Answer

Picture has green tint on startup

Jar-Head, bad news, the picture tube has a mild short in the green cathode, tech can come out and try to restore it but it`s usually a futile attempt on sony tubes, sorry to be the bearer of bad news, BMW Rider

Jan 14, 2008 | Sony KV-32S26 32" 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

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as you said your tv is about 3 years old. we cant tell that the picture tube is defective and im sure your CRT socket is in solid contact at that 3 years old tv. for me it could be a path ways to the CRT wirings. a blurry picture may cause a insufficient voltage or a lost of voltage ratings. try to check if you can see and test a leaky capacitor 16V 1000mf near from the CRT wirings ending in contact to the main board. if you cant fix this problem contact a pro to solve your problem. good luck

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1 Answer

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Sounds like you've got a vertical deflection problem causing the shrunk picture and finally a solid bright line. As to the loss in brightness you may be losing screen voltage to your picture tube. Probably it is time to shop for a new tv since cost of repairs may be too much. Stargazer

Nov 15, 2006 | Philips Magnavox 20MT133S 20" TV

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