Question about Sony FD Trinitron WEGA KV-27FS100 27" TV

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Sony Trinitron - Picture Disappears

While watching a TV show on my Sony Trinitron, the picture will disappear (screen goes black), but I have sound. If I turn the tv off/on, the picture will come back, but later it will turn back to black.

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  • Anonymous Dec 14, 2008

    Our sound is perfect, however, the picture is black except for a 10 or 15 second interval when the picture comes in very clear and then disappears again and won't come in again. Turning off of the set and then turning it on again will activate the picture for about 10 seconds but then the screen goes black again.

  • Anonymous Mar 14, 2014

    Sony trinitron shows black and white.. I was wondering if ther is a bulb or bulbs that may be blown? Please Help!!!!!

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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

Posted on Feb 27, 2008

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I have a Sony Trinitron 32" tv. When I turn it on, it has started taking longer and longer for the picture to come on. Sound is fine. Now once the tv is on for a while, the picture goes black for...


Yes.... u must adjust the screen voltage going to picture tube....located on the CRT module>>>little board connected directly to picture tube (take back off TV and you will see ) play around with screen control on the CRT module......can be adjusted at times to keep from losing picture!!! tube is bad...i know sure looks good when showing a picture....TRY adjusting screen voltage ( YES while TV is ON>>>CAREFULL ) gl

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Check the set up. You may have closed captioning turned on which will show up as a black box if there is no closed captioning information for the selected channel. If that fails to resolve the problem, update this.

Thanks,
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1 Answer

When initially turned on TV will alternat between picutre & black


When the tv goes to a black screen does the sound remain on? Also,if you listen carefully can you hear any arcing noises in the back of the tv?

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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.).

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1 Answer

Picture stays on for 3 mins, then slowly disappears


sounds like the filament of the picture tube is losing voltage. normally this would be caused by a bad/broken/cracked solder connection. If this is the problem, it may not be too dificult to fix if you have the soldering skills and know what to look for.

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no,if you fix it then who knows it might be expensive first of all. Also it can brake again ,just get a new tv

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1 Answer

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You likely have bad solder connections around the tuner area. This model has a history of problems in that area or the tuner itself.

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