Question about JVC AV-27F802 27" TV

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Blue screen appears instead of picture on TV

Power indicator light is now red, it used to be green.

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Cable was loose under the house from the satellite system.

Posted on Jan 18, 2009

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Can i fix my tv screen is red


Toshiba 36A10 36" TV is the model you have indicated---

If the screen is all red and or too bright (no green or blue can be seen) the problem is in one of two places: Either a shorted picture tube or the board that plugs onto the end of the tube.

That board sends red,green, and blue video and information to the picture tube via 3 pins on the tube (the K or cathode for each).

The set will have either 3 IC's on that board or 3 transistors, or a single larger IC for this.

to troubleshoot this:

I would locate the Red Cathode and unsolder that pin at the socket on that board--takes red out---if you have green and blue picture then---it is either the IC/transistor that feeds that on the board or the tube itself.

If it has 3 chips (usually will each have a metal plate attached for cooling) you can either remove and replace the red one OR what I do is swap it with the green or blue chip---if suddenly you now have a blue or green only screen you know that part is bad--simple as that.

If for any reason the picture tube turns out to be bad--you are finished and so is the set= way too expensive to replace it.

Let me know if you have questions or need advice.

Mar 28, 2012 | Toshiba 36A10 36" TV

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Tv out of foucs


These procedures are from the owners manual, go into menu and then picture quality and then: Convergence The Convergence feature lets you adjust the TV’s three tubes. When the TV tubes’ images are precisely aligned, they create the color images you see on the screen. Over time, the picture can drift out of alignment (this is normal). If your picture seems fuzzy or has a yellow tint, using Convergence could correct this misalignment. Only one convergence is needed for all inputs, regardless of the signal format. Note: Make sure the TV has been on for at least 30 minutes (TV needs to warm up for best results) before starting Auto Converge or Red/Blue Centering. When you select the Convergence feature, a submenu appears with three options: Auto Converge Automatically aligns the projection lenses to self-correct color images. You’ll see flashing squares of color dance across the screen (this is normal). Note: After performing auto convergence, use the Blue Centering and Red Centering menus to fine tune convergence in the center of the screen, if necessary. Blue Centering Aligns the blue and green images to fine-tune the picture. Red Centering Aligns the red and green images to fine-tune the picture. Note: The ability to change channels is disabled when adjusting the convergence options. The TV must be tuned to a usable signal to converge the picture.

Apr 23, 2010 | RCA HD52W58 52" TV

1 Answer

Green picture only


The projection TV has 3 guns RED GREEN BLUE. In your case the red and the blue guns are gone. So you are getting the green color screen. You got to replace the picture tube.


Jul 25, 2009 | RCA TruFlat 27F520T 27" TV

1 Answer

Picture wont come on screen


this problem is in the power supply.the red lights indicate as the standby mode.

Jan 23, 2009 | Sony FD Trinitron WEGA KV-36FS120 36" TV

2 Answers

RCA 56 inch hdwidescreen


Did you use the Automatica Convergence to try and straighten it out? If that does not help, you can manually adjust the convergence.

Jul 12, 2008 | RCA HD56W58 56" TV

1 Answer

Bush RFT TV


The picture tube of the tv has 3 color in CRT Red, Green, Blue. The red cathodeof tv set has no function, its either the resistor become higt resistance, that why u need a repairman to replace it.

Apr 10, 2008 | Standard (CRT) Televisions

2 Answers

The picture is only producing the basic colours red green and blue


You can start with the make, model and age off the back of
the TV..........................T.

Dec 24, 2007 | Standard (CRT) Televisions

1 Answer

Tv Screen Problems


as you see green screen with lines through it

lines you are seeing is called retrace lines.

the problem is due to green video output section failure

please check the followings as given

  • supply to green video output & video output itself
  • components in green video output circuit
  • crt base loose.
  • connector loose in video ckt.
  • signal from signal processor to  green video section is absent.

hope this will help.

good luck.

 

Oct 15, 2007 | Standard (CRT) Televisions

1 Answer

The picture is only producing the basic colours red green and blue


Can you post a picture of the Tv with the issue stated?

Feb 28, 2007 | JVC AV-24F703 24" TV

2 Answers

TV won't turn on


The red light instead of green is an indication that theres a voltage missing or an improper voltage in the sweep or main power supplys. This should be handled by a trained service tech. Good Luck

May 28, 2006 | Durabrand DWT2704 TV

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