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Rca 32 inch

I had my tv repaired and it had a bad I C and also repaired the printed circuit board , but now all of a sudden the picture went to bright orange and blue colors and blurry, so what could it be.

Posted by dhayworth on

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Francisco Mauricio G

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Maybe the eeprom are corrupted

Posted on Aug 11, 2008

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Proscan 37lb30qd


This could be one of two things. The backlight is dimming. There are tube lights in the unit and they slowly burn out. The way to tell is if the picture turns a shade of orange slowly comes on to full brightness. It could also be the inverter. The inverter is the board that powers those lights.

Jul 14, 2013 | Televison & Video

1 Answer

My Tv started with flashing red/orange colors. Then later the screen turned red/orange and the TV shut off. When I attempt to turn it on again, the screen stayes red for a few minutes then shuts off.


The problem based on the model number is in or around the red picture tube---the bright red screen causes the set to draw too much current and the shutdown circuit detects this and turns set off--self protection.

Each picture tube (3) has a IC chip on the board connected to it--shorted chip or bad picture tube.

Shop repair in most cases.

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1 Answer

Sound, but no picture


If before it was going rather bright red or a version of that--it is related to the circuit for the red picture tube this set uses---the tube itself or the circuit board that plugs onto the end of that tube.

If bright red, green or blue screen set will detect too much current being drawn and blank or turn tubes off; not likely a do it yourself repair and this set is prone to this and many other problems---Just Google the model number with "problems" and see what I mean.

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1 Answer

Plasma TV colour going off


That could be the Z board, but most likely the sustain and upper/lower buffer boards. The brightness is found in the Z board. Try to find a repair shop to repair on the component level because the cost of new boards out weighs the cost of replacement.

Best Regards,
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2 Answers

LCD TV PICTURE HAS GONE OFF BUT NOT SOUND?


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.

Mar 08, 2009 | Televison & Video

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
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
[email protected]
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

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1 Answer

Bright line coming in center of screen


Hi Shailendrar , your problem sounds like vertical collapse , the whole picture has collapsed into a thin , very bright centre line ? maybe the result of dry solder joints , does banging on the side of the tv temporarily fix ? if so , the circuit board requires inspection for bad solder joints . Alternately the vertical chip/transistor may be blown , replace as required. Cheers T

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1 Answer

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could be some bad solder connections on the crt socket or around the flyback area dealing with the brightness

May 12, 2007 | Panasonic CT-32G34 34" TV

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