Question about Toshiba 36A40 36" TV

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No blue color

Tv makes good picture, just no blue color

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Re: no blue color

Good day.

The problem may have been caused by loose terminals of parts. Yuo can have resoldered.


Posted on Mar 23, 2008

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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

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My tv sceen has a stain that makes anything white look yellow.

The color image is comprised of three colors, Red, Green, and Blue.
All the other colors are mixtures of those colors. The yellow picture indicates that your set is lacking sufficient blue drive.

First of all check to make sure that the tint control is not misadjusted.
The next thing is dependent upon the age of your television. If it's an older set that yellow tint is a sign of an aging picture tube.
If it's a newer set, less than 5 years old, have it analyzed by a electronics technician that is familiar with televisions if he is skilled enough he will know right away if it's the picture tube or not.

Apr 17, 2010 | Sony FD Trinitron WEGA KV-34HS420 34" TV

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Clear but only blue/green color

Do you have a component cable hooked up to the TV? (cable with RCA connections Green/Blue/Red/White/Red)

If so you want to check that the red cable is tightly connected to both ends (TV and whatever it is connected to).

Good Luck...

Jan 23, 2010 | Toshiba 36A41 36" TV

1 Answer

DVD connections have progressively grown darker and now have gone to totaly black and white. Television color and picture are completely normal.

If you are using the red,green and blue component inputs, check to make sure the red and blue ones are connected good and none of the jacks are loose. If not there is a problem with either the DVD player or the TV. Hard to say. Thanks

Oct 28, 2009 | JVC AV-27D203 27" TV

1 Answer

Toshiba 32a43 32' picture garbled mess

If you can get the tv to display the blue blackground(usually happens when there is no antenna or cable feed to tv) check to see if the whole screen is a solid blue, if it shows discolored areas around the screen then you might have to "demag" the screen. See if you can rent a demad coil from a tv shop and with tv on turn the coil in circular movements all over the front of screen till blue is solid.good luck!

Aug 03, 2009 | Toshiba 32A43 32" TV

1 Answer

Yellowish picture everything else is good

That model had lots of problems, it sounds like your loosing blue. Try putting up a color bar chart and see if you have blue. Color bar is availible on most cable systems. ggod luck

Feb 28, 2009 | Samsung PCK520R TV

1 Answer

Yellowish monitor display

You have no blue gun transmission. Check your work around the tube and make sure you have good connections. Ohterwise it's in the blue gun circuitry.

Feb 13, 2009 | Toshiba 36A40 36" TV

1 Answer

Color Problem

prob bad crt. blue gun weak. new tv is answer.

Nov 17, 2008 | Zenith B25A74R 25" TV

1 Answer

Broken Electron Gun?

Pls do not jump to hasty conclusions! 'Electron guns'do not break! It could be a simple problem like a faulty CRT base! Or perhaps the Blue Output Transistor is faulty! First ask a good technician to have a look. If he confirms that the Blue Cathode is faulty, then I advise that you get a new set.

Aug 05, 2006 | Quasar SP-2722 27" TV

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