Question about Standard (CRT) Televisions

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Adjusting I tried to adjust my tv, now there is a black box on the screen that covers 1/2 of the screen, and I can't get it off.

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Re: adjusting

I had the same problem. the captions were on for two years till i read the above answer and its teh cc button that turns it off!!!!!!!

Posted on Mar 01, 2009

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Re: adjusting

You have the closed caption turned on the set. Since you did not leave a model number, I cannot tell you the procedure on how to turn it off. Sometimes there is a button on the remote marked CC or closed caption, and sometimes it is switched on and off through the on screen menu. Good Luck

Posted on Jan 04, 2008

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Screen goes black

Your TV have sound? If your TV have sound but no picture the problem is in the high voltage section of the crt board or try to adjust the screen adjustment.Its located in the flyback inside the TV at the back right side,the lower adjustment is the screen and upper is focus adjustment. If totaly your TV has black out check the fuse at the back if busted then replace it with same value.

Jul 11, 2011 | Sony FD Trinitron WEGA KV-SW29M50 29" TV

1 Answer

I can't seem to get accurate color, and I've tried a bunch of different custom color and contrast options... what should I do? (There is a sort of sepia tint to the screen)

Try adjusting the Screen voltage. Easiest method I know of: remove rear cover, locate the FBT (has a large red wire running from it that attaches to the back of the tube). You will see 2 or 3 adjustment knobs on it the should be labeled if you look close (screen is normally on the bottom). Turn the TV to a black screen (often an empty input works well). Slowly adjust the screen voltage knob (small screwdriver required) Clockwise, until you see some beam trace lines on the screen. Now, begin slowly turning it Counter Clockwise until the lines are gone and the screen just turns black again. Press the menu button and use the on screen menu and the top knob(s) on the FBT to fine tune the focus. Leave the cover off for the moment and see if your color is better. Repeat the adjustment if needed. If this does not help your situation, you may have something else going on... let me know.

Mar 15, 2010 | Samsung Ultra SlimFit 20" Digital TV

1 Answer

My rca truflat tv will get a black box pop up on the screen. It covers most of the picture. Sometimes there will be text in the box. If I adjust the volume it will disappear for a few seconds then come...

It is a Text or Description box that operates like Closed Captions. Cycle through the options by pressing the Caption button on the remote or go to the Caption menu and turn it off.

Jan 17, 2010 | RCA TruFlat 27F520T 27" TV

2 Answers

Daewoo DTQ-27U4SC Display Problem

Sounds like your closed caption may be on and here is how to turn it off..

1. Press the menu button until you get to the "SPECIAL" menu.
2. Make sure that Closed Caption and CC on mute are both set to OFF.

This should make that black box go away...

Good Luck and please rate this solution...

Jan 06, 2010 | Daewoo DTQ-27U4SC 27" TV

3 Answers

Tv to dark cant see nothing tv's to dim

On the back of the TV, to the right of the I/O panel, there are 2 vertical slot shaped openings on a raised bit of the plastic case. Behind the lower slot is the screen adjuster. Using a phillips screw driver, turn the adjuster clockwise to increase the brightness. Behind the upper slot is the focus adjuster.

Dec 27, 2009 | JVC AV-27D305 27" TV

1 Answer

At random a black retangular box appears on the screen

Go into the TV's closed-caption settings and turn off captioning. You'll find it's set for "text" mode right now. What's happening is that in text mode, the set blanks out the part of the screen where the text will go but there isn't any. On channels or programs where captions aren't being broadcast you don't see anything. With the captions turned off the box will go away.

Apr 10, 2009 | Toshiba 20AF41 20" TV

1 Answer

Scrolling screen

There's a horizontal adjustment that needs to be made in the TV. If you feel mechanically inclined, you can take the back cover of the TV off (Be very careful with this. If this is a CRT (picture tube) then there is a capacitor at the top that has ALOT of stored energy.) You will see a couple of potentiometers (Looks like a little black wheel with a slot for a screwdriver). One of these will be the horizontal adjustment. Very slowly try to turn this until it adjusts.

If you give me the model number and brand of the TV I can try to find you a manual that will help you determine which one to adjust.

Apr 07, 2009 | Philips Standard (CRT) Televisions

2 Answers

Black Box on the screen

It sounds like a text box that isn't receiving any text. If it covers almost the entire screen, then you might have accidentally got the settings into DEMO mode. It could also be a box for closed captioning, but that usually covers just the lower part of the screen. Either way, the solution is to go into the setup menu and restore facotry presets.

Nov 27, 2008 | Toshiba 27A33 27" TV

1 Answer

Black screen

I work at at a school, and we had the same problem. Turns out, it a Closed Captioning problem.

We found the manual, and it states that "If a large black box covers 80% of your screen, the Text mode is probably set. Press 'Closed Caption' to turn it off." The "Closed Caption" button is on the remote. If you don't have the remote (as in our case), you can go to "Closed Caption" in the menu, and pick something like C4 and T4. That stopped the black box for us.

Jun 09, 2008 | Standard (CRT) Televisions

2 Answers

Sharp 20f640 focus problems

At the rear of the tv there may be two controls on the right hand side marked "screen" and "focus".If the set is newer,you will have to remove the cover and look to your right.You will see a dark object with a black or red wire coming out of it's top.That is your flyback transformer.On this you will find these two controls.Adjust your focus with the one so marked.Be careful to only adjust this control while you watch your picture clear.PROMPLY put the cover back.

Feb 10, 2008 | Sharp 20F640 20" TV

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