Question about RCA F27625 27" TV

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Color The screen is all green. Adjusted color still all green.

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It needs repaired. I can think of many different possibilities causing the problem: 1. Shorted video luminance driver transistor. Should be under $200 total repair if you take set in. 2. Shorted green kine bias transistor. $200 3. Failed jungle ic. $250 4. Shorted green gun in the picture tube. More than you paid for tv set... Rca picture tubes commonly run 25% more than the tv set did new!!!!!!!

Posted on Nov 28, 2005

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Posted on Jan 02, 2017

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1 Answer

Green and blue faded


Some of these had bad picture tubes--(model indicated here uses 3 tubes)

Simple test is go to a black and white channel and turn color to zero= is the screen black and white or some other color?

Also go to a unused video input and look at screen=all you should see is black screen with the input number in green= any other color and something may just need to be adjusted.

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turn the center dial ( for green) down slightly then turn the other two the red and the blue up slightly to get the best screen without a dominate color screen.

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1 Answer

All of a sudden, the color changed to a blue/green...


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May 20, 2010 | Computers & Internet

1 Answer

My color seems to be more green than should be and I have tried to reset the color with no help


You have a focus/screen control box Find it and adjust the R/G/B screen drives When you first start Go to Menu turn Color off then with a mirror adjust the picture as close as you can to a black and white picture R/G/B screen drives, the little control box you are looking for will have 3 controls on top for focus and 3 controls under them for screen drives to each tube red,green,blue after you have adjusted to a black and white picture then go back and turn color on.

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1 Answer

My red color on the color convergence does not match the blue and green color


This is a very common failure on Projection TV sets.
Screen looks 3D
Colors don't line up
One or more colors can't be adjusted when using the convergence menu.
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You can see some example photos and find a solution here...
http://www.fixya.com/support/r2861627-updated_convergence_problems_amp

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1 Answer

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CONNECT YOUR DVD PLAYER TO SOME OTHER TV .IF THE COLORS ARE OK ,THEN YOUR TV IS AT FAULT .
THE COLORS OF YOUR TV CAN EASILY BE RE ADJUSTED BY A TV SERVICE MAN.
THE CORRECT RATIO OF RED ,GREEN ,BLUE NEEDS TO BE ADJUSTED .

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1 Answer

Hitachi 53uwx10b Convergence


The grid (called an overlay) is put in place to fine-tune one of the colors, usually green. Once one color is adjusted perfectly, the other 2 colors are adjusted to match the first color. For example, if the convergence data is completely erased, the tech will set up the overlay and align the green using to the overlay, and then align the red to the green and then the blue to the green. If the alignment is being done after replacing the convergence IC's because one or 2 colors are slightly off in the corners, the green is usually very close to perfect and the use of the overlay is not absolutely necessary. It is pretty easy to align one color using the outer edges of the screen itself. If you do need the overlay it can be purchased from any Hitachi parts distributor such as Herman Panson, Fox or Union Electronics.

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3 Answers

Color problems


green overpowering makes me think you have a crt problem. or even a bad blue or red crt.

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1 Answer

JVC AV27320 Screen too dark


Check the lumans circuit. may be jungle IC

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1 Answer

Blurry Images


Hello paulaspec,

You have a problem with the three factors, and they are screen voltage, focus voltage, and control (focus 2) voltage. Basically these voltages have to be adjusted since the components in this section have aged some. These controls are usually located in the television on the IHVT (Integrated High Voltage Transformer) or as it is also called the flyback transformer. these controls must be adjusted together, along with the color controls. Here is how the adjustment is done (You will need a schematic diagram, a DC volt meter, and a color bar generator to do these measurments):

 

1) turn color and tint fully counter clockwise until you have a black and white picture.

 

2) connect the color bar generator to the TV (ch 3) and turn it on, you should see bars in various shades of gray

 

3) adjust as best as possible the color and tint controls to obtain the color bars on the screen Red Green Blue.

 

4) measure the voltages on the focus, screen and control grids of the CRT and match them to the schematic digram measurements.

 

5) adjust the focus screen and control grids to match the ones on the schematic diagram

 

6) once this is done then you adjust the color controls once again to obtain the red green and blue bars on the TV screen.

 

This should help if the CRT (picture tube) electron guns are still good and if the flyback transformer voltage supply is working.

 

However if you do not have a background in electronics please take the TV to a shop for repairs.

 

I hope this helps,

Thank you,

Shuttle83

Oct 16, 2007 | Sony KV-20M20 20" TV

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