Question about RCA 20V500T 20" TV

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20v500t turns on and it turns off by itself imediately

My tv turns on, I see red blue and green colors and then it just turns off

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CHECK VALUE OF RESISTORS IN CRT BOARD,,,,AND THE 3 TRANSISTORS COLOR DRIVERS ....THATS AUTO SHUT DOWN FOR OVER VOLTAGE....DO YOU SEE RETRACE LINES BEFORE SHUTDOWN?IF YES TRY TO LOWER DOWN SCREEN FIRST ON THE FLYBACK TO SEE IF ITS GOING TO SHUTDOWN.....

Posted on Aug 08, 2008

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2000 PANASONIC TV WITH RIGHT SIDE OF PICTURE THE GREEN AND RED COLORS ARE ABOUT A 1/4" OFF FROM EACH OTHER


trysetting the convergence on the tv itself,if that doesnt work you have a bad convergence amp maybe just 1 of them,you have 2 1 for greenand red 1 for green and blue,hope that helps.

Jan 17, 2013 | Panasonic Televison & Video

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Why did my Kolin DLT-3212M LCD tv picture suddenly go green


Are you connected with a box of some kind via the component input on this set? (red, green, blue connections?

If so unplug that box and wait--plug it back to see if the box will reboot and correct the issue--also you can try to swap green cable itself with blue for example and if then have BLUE issue that cable is bad.

May 20, 2012 | Televison & Video

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Not able to get red tones on TV


the problem is at the crt base .there r three red,blue n green o/put.verify if there is dry in the soldering n check the red cathode voltage it must b around 150 .if not then check the resistor that feeds the red o/put.it could b 12 to 15k. all crt have 3 driver color red blue n green,whenever one driver not working the color changes.that wat happened to ur tv now i do not know wat model u have.the drivers may b transistors or now its ic that r being used like tda 6103q.best of luck

Jan 03, 2010 | Toshiba 27AF45 27" TV

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No red when hooking up component cable for dlp hd tv. Only blue and green colors show on hd component input for charter hd cable box. Are there any internal adjustments that need to be made through either...


Check the red cable this is where the red comes from, you may have a bad cable, maybe use the blue or green one just to see if the red will come through, it can be the cable box or the tv or the cable itself.

Nov 03, 2009 | JVC HD-61Z456 Television

1 Answer

Philips 23PF9966/37 color problem!


Most likely you can adjust it in the Service Alignment Mode (SAM).

Press 062596 followed by the STATUS button (upper left). Navigate to "White Tone", press the right key to enter and select "Normal" mode. Set the colors:

Red = 135, Green = 128, Blue = 133.

The "Cool" and "Warm" menus are deltas from the "Normal" settings:

COOL: R -3, G -1, B 5
WARM: R 2, G -3, B -13

Press the "MENU" button to return to the main menu, then the "Power" button to turn the TV off.

Jun 15, 2009 | Philips 26PF9966 26 in. LCD Television

1 Answer

TV picture is red.


Normal color picture is composed with 3 colors R-G-B (Red-Green-Blue). Picture turns Red means: Missing Green and Blue colors (many reasons: bad contacts, projector tubes dead, and other...). Try to give some "tabs" to diagnose ... I don't know what is the type of your Projection TV, how long you owned it, to have more idea.

May 15, 2009 | Toshiba 57H81 57" Rear Projection...

2 Answers

Picture calibration settings for 42lg70


Picture Menu
Picture Mode: Expert1
*Backlight: 16
*Contrast: 83
*Brightness: 53
Sharpness: 50
*Color: 55
*Tint: 0
Expert Control
  • Fresh Contrast: Off
  • Noise Reduction: Medium
  • Gamma: Medium
  • Black Level: Low
  • Real Cinema: On
  • TruMotion: Low
  • Color Standard: HD (N/A w/HDMI)
  • White Balance: Warm
  • **Method: 10-Point IRE
    • 10 IRE
      • **Red: 1
      • **Green: 2
      • **Blue: -16
    • 20 IRE
      • **Red: -6
      • **Green: 0
      • **Blue: -7
    • 30 IRE
      • **Red: -5
      • **Green: 0
      • **Blue: -4
    • 40 IRE
      • **Red: -8
      • **Green: 0
      • **Blue: -4
    • 50 IRE
      • **Red: -4
      • **Green: 4
      • **Blue: -4
    • 60 IRE
      • **Red: -6
      • **Green: 6
      • **Blue: -5
    • 70 IRE
      • **Red: -8
      • **Green: 3
      • **Blue: -10
    • 80 IRE
      • **Red: -8
      • **Green: 7
      • **Blue: -16
    • 90 IRE
      • **Red: -9
      • **Green: 5
      • **Blue: -18
    • 100 IRE
      • **Red: -10
      • **Green: 4
      • **Blue: -9
Color Management System
  • Red Color: 0
  • Red Tint: 0
  • Green Color: 0
  • Green Tint: -15
  • Blue Color: 0
  • Blue Tint: 11
  • Yellow Color: 15
  • Yellow Tint: 2
  • Cyan Color: -15
  • Cyan Tint: 0
  • Magenta Color: 0
  • Magenta Tint: -1

lg70 nice tv excellent processor just to bad there is no intensity control on color management oh well still better than what the three s are pushing block out the hype lg will be number 1 in a few years haters are starting to come around and well leds coming,

p.s. i dont work for lg just tired of losers bashing stuff because they dont own it.
im isf certified those settings are right on the money straighter than a ruler

Oct 05, 2008 | Televison & Video

2 Answers

Screen Green Tint


Turn down your color and see if the screen has a normal black & white screen. If it doesn't then the CRT is bad (picture tube). If it is black & White then you have a either lost your red or blue.That problem will be in your video driver circuit of which a service center can handle.

Feb 18, 2008 | RCA 20V500T 20" TV

1 Answer

TV Problem with shutting off by itself


Mine just did the same thing.  Except for it was green instead of blue.  The service manual states 8 flashes from the light stands for an overvoltage.  After reading the manual for a bit I realized the bottom row of 3 adjuster screws from behind the speaker grill adjust the output for the red, green, and blue colors.  BEFORE OPENING ANY TV OR MONITOR PLEASE KNOW THAT THE VOLTAGE INSIDE CAN KILL YOU EVEN IF UN-PLUGGED so please be careful and only adjust what is mentioned here.  I un-plugged the tv, removed the grill and the board covering the internals, and carefully turned the 3 adjustment screws all the way down.  I then waited about 10 minutes (don't know if this made a difference).  I turned on the tv, turned the channel to an auxilary input (for a black screen), and slowly raised each of the 3 bottom screws one by one up clockwise until i could see a faint green, blue, or red line (depending on the screw), and then turned each one back a hair until the screen was black again.  Only adjust one at a time, the order for colors are blue, green, then red from the left.  I hope this fixes your problems.  Be careful when working inside a tv,  I suggest not using a screw driver to adjust the screws due to the possibility of it slipping and someone getting hurt.

Sep 16, 2007 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Problem with color


Yes you have a problem in the red crt driver board. Most likely the driver transistor is failing. This is a component level repair, so if you have no experience with TV repair, play it safe and call in a trained tech to assist you in this matter. Good Luck

Jun 05, 2007 | Mitsubishi VS-50609 50" Rear Projection...

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