Question about Sony FD Trinitron WEGA KV-34HS420 34" TV

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Sony 68cm flat screen trinitron tv half black screen half picture

Just watching the tv and the top half of the screen just went black and there is a line through the middle and there is picture down the bottom. Is this problem worth fixing and how much would it cost?

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You have a vert sweep problem and unless you know how to trouble shoot this cuircit bring it to a pro. I found out mostly in these sets that the vert output IC is bad.. Also sometimes the b+ filter cap off the fly is leaky and made the IC to fail. Another thing is Im surprised to hear you got a pic with the vert failure and a bright line in the pic!! This could be a big problem when the sets fixed so dont run it too long like this. It could burn a line all the way across the screen and you will see a dark faint line in your pic because of this. BE CAREFULL!!

Posted on Mar 25, 2006

  • 373 Answers

SOURCE: Sony Trinitron Color Rainbow

Usually when a tv is dropped the phospher screen inside the picture tube will detatch making the rainbow color This cannot be fixed as it requires changing the picture tube. Only other thing is demagnatize it with a demagnitizing coil (used by tv techs) but not likely to fix it since it was dropped. You have a bad picture tube.

Posted on Dec 30, 2007

  • 4234 Answers

SOURCE: Sony Trinitron wega KV27FV310

Sounds like a problem with the vertical circuit. If yuo can solder and are comfortable with working inside the set, you may be able to repair this.

Keep us posted.

Posted on May 23, 2008

  • 4234 Answers

SOURCE: Sony Trinitron Model KV-27S10

If hte set is a Sony, the standby light should be blinking a code. Report that code here and we should be able to guide you. That code will indicate the problem circuit within the set that has the fault.

Posted on Jun 03, 2008

  • 119 Answers

SOURCE: I have a 10 yr old Sony FD Trinitron WEGA 32" Flat

Hello jorge and welcome to FixYa. With your particular model of television six blinks mean a Horizontal Drive Failure has occurred. If you have any television repair experience you could try checking the jungle for loose or possibly bad soldering. In some case the jungle IC was found to be defective on this model as well. You should also inspect the horizontal drive transformer windings if at all possible. If you are unable to repair this yourself I would personally say to you no it is not worth the cost to repair it as purchasing a new television would probaly be a more prudent decision. I hope you found this helpful and thank you for visiting FixYa.

Posted on Apr 23, 2011

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I have a Sony FD Trinitron 27' Model # KV-27FV310. It is approx 8 years old. After turning it on and watching a full screen for a few minutes; all of a sudden, a line came across half the screen;

top half missing is in vertical circuit of set---if it is a 27 inch and this old consider retiring it and replacing----other option is consider having a shop repair it--a rough guess would be as high as 150 dollars parts and labor is possible for your problems.

May 01, 2012 | Standard (CRT) Televisions

1 Answer

Blackout area on screen

Make sure the TEXT and CAPTION options are turned off.

I am not sure about the Sonny's, but on my Toshiba a black box appears when I inadvertently leave one of the close captioning (CC) on for text or captions on (such as CC1, CC2, etc.).

Feb 15, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Black box covering one-half of TV screen

Try turning off the text box function of the closed captioning.

Aug 02, 2008 | Sony FD Trinitron WEGA KV-27FS120 27" TV

1 Answer

Sony Trinitron wega KV27FV310

Sounds like a problem with the vertical circuit. If yuo can solder and are comfortable with working inside the set, you may be able to repair this.

Keep us posted.

May 23, 2008 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

Sony Trinitron - Picture Disappears

Hi, IK circuit is engaging which basically means the picture tube is getting tired, the only "fix" is temporary (may get another year out of it). You have to increase the "screen control clockwise".
Remove back of set, follow large black or red wire attatched to picture tube down to the flyback transformer, mounted on flyback are two black controls, one is focus (leave it alone) the other is "screen", adjust it clockwise approx. 1/4 inch, remember that this is a high voltage circuit so use one hand in the set the other hand out of the set at all times,any questions ? e-mail me back, good luck, BMW Rider

Feb 27, 2008 | Sony FD Trinitron WEGA KV-27FS100 27" TV

1 Answer

Sony Trinitron KV-32S40 32" TV problem

This is a simple and common problem. The solder joints on the vertical output IC have cracked loose. I actually did a housecall on the exact same set with the exact same symptoms this morning! A good tech will resolder the pins of the vertical output IC and all other major solder joints on the main board and the set will play fine.

Sep 30, 2007 | Sony FD Trinitron WEGA KV-32FS100 32" TV

1 Answer

Half Picture

I have seen this caused by 2 different problems. The vertical output IC could be bad but it is usually the CXA jungle IC that fails to cause this. Either way the set should be serviced by someone experienced in repairing Sony TV's.

Aug 09, 2007 | Sony FD Trinitron WEGA KV-32FS100 32" TV

2 Answers

Sony TV - Loss of half the picture

sarge, it sounds like the vertical output IC went bad on you. If it was a bad connection or a bad capacitor, your picture would have been a straght line across the screen. They call the output section of the IC a push-pull type of amp, so the top half of the sweep IC went out. If you have had some soldering experience, and or experience with solid state repair, locating the bad IC and replacing it is no big deal. If you havent, stay safe and call in a pro to assist you in this repair, as there is alot of high voltage inside this puppy that is still present even if the set is unplugged. It should not cost an arm or a leg to repair this set. An honest repair on a set like this if you take it in should not exced 125 to 150 bucks. Good Luck PS Please dont forget to rate this thread.

Oct 22, 2006 | Sony FD Trinitron WEGA KV-27FV310 27" TV

1 Answer

Half a screen

The picture on your TV screen is driven from the center to the top and bottom of the screen by the vertical drive circuit. The fact that you can see the entire picture means you have a problem called foldover. This is caused by a failure in the vertical drive circuit where the vertical saw signal is altered by a component failure within the vertical drive circuit. You cannot solve this problem but any good repair shop should be able to correct the problem at a reasonable cost.

Jun 22, 2006 | Sony FD Trinitron WEGA KD-32FS130 32" TV

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