Question about Vizio GV42L 42 in. LCD Television

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I also get a black screen when I turn on my tv. I can get sound but no visual. Not sure if it's the picture tube.

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Ur LCD inverter is dead,need it replaced to get picture back.

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1 Answer

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

May 19, 2010 | Sony FD Trinitron WEGA KV-32FS100 32" TV

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Tv will not turn on, just makes a clicking sound


Brother this is problem usually  when either the fly-back (picture tube transformer )or tube  voltage regulator  Transistor is damaged or the picture tube has a short 


Best of luck 

Aug 12, 2009 | Panasonic Televison & Video

1 Answer

Was watching TV and the picture just went black (still had sound)


eithor the flyback just craped out or the tube went
try turning up the flyback failing that call a service tech and ask for a quote
quote cose 30-50 bucks
atleast you will know forsurre if it's worth fixing

Aug 06, 2009 | Samsung SPN4235 42 in. Plasma HDTV

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Was watching tv all of sudden screen turned black, with audio...


i was watcing tv afeter a while i realized there is no picture but we have sound

Jul 14, 2009 | ESA PDP4294LV1 42 in. EDTV-Ready Plasma TV

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Tv screen goes black


No, if the picture of your tv screen is clear when when you watching. the troble of your tv is looseboard, and you replace your CRT socket too.

Apr 16, 2008 | Sony KV-35V35 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

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1 Answer

Sony kv 32s42 32 tv


turn up your master screen control on flyback transformer. if when sceen gos black ,the timer light will be blinking. this means your picture tube is week. by turning up the screen control you may give it more time.

Aug 05, 2007 | Sony KV-32S42 32" TV

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