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No signal when i turn on ma tv sonny trinitron 21:no sound, no picture

How to fix it

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  • Televison & ... Master
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What is the exact model number to your Trinitron TV?

Posted on Jan 12, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

jomaru
  • 337 Answers

SOURCE: TV has audio sound and no picture

Your set migbe missing the high voltage that lights up the picture tube,you need to check for loose conections starting at the horizontal drive transistor and transformer ,then check the horizontal output transistor for short,it needs to be checked with a meter if the output is shorted it probably open a safey fuse or resistor to prevent more damage.If you are familiar with tv service this will give a place to star but if you are not too familiar be safe and seek the help of a servicer.Let Us know if you need more information.

Posted on Oct 14, 2006

  • 28 Answers

SOURCE: picture wont turn on

Red LED flashes probably five times.
You have not mentioned the model no, so I have to guess it is few years old model.eg FE2 chssis or similar.
Most common reason, R618 270k ohms in power section has gone high.
Second, screen voltage control is slightly misaligned.
Third, high value resistors on tube base, normally two connected to screen voltage control pot have gone high.
You need to have some knowledge , a multi meter and soldering iron and know safety procedures before trying yourself.

Regards

capital98

Posted on Nov 30, 2007

BMW Rider
  • 232 Answers

SOURCE: 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

Posted on Feb 27, 2008

  • 71 Answers

SOURCE: TV has audio sound and no picture

major repair; requires 16 pin ic

Posted on Apr 29, 2008

SOURCE: no sound (sony trinitron kv-2197pf 21" tv)

try to short the spider transistor along ic amplifier. it is in a mute

Posted on Nov 12, 2008

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1 Answer

Sound but no picture on sonny trinitron


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

May 13, 2016 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

There is no picture, but there is sound from my tv


I would say that your speakers are obviously still working fine but your tube has failed. You could get it fixed but it probably wouldn't be worth the price the repairman would charge

Sep 22, 2009 | Sony FD Trinitron WEGA KV-21CL10 21" TV

1 Answer

Sony grand wega turns off & o ever 30sec flashes green light


it's a power failure.try to replace the regulator in power supply board.

Sep 04, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

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

No sound (sony trinitron kv-2197pf 21" tv)


try to short the spider transistor along ic amplifier. it is in a mute

Oct 05, 2008 | Sony FD Trinitron WEGA KV-21CL10 21" TV

1 Answer

Sony tv


Please resold all pins of IC001 in main board of TV. Problem will be solved.

Aug 08, 2008 | Sony FD Trinitron WEGA KV-21CL10 21" TV

1 Answer

No Signal through on my main TV input.


This may be the tuner or IF module that is failing. It may also be a voltage supply fault to these modules. It is impossible to accurately speculate without actualy troubleshooting the set.

Jerry G.

Nov 10, 2007 | Sony FD Trinitron WEGA KV-36XBR800 36" TV

1 Answer

Sonny tv triniton


Buddy, Not a problem for the average Home Technician. Unless you are good at Solid state Electronics service. Problem is faulty Red Outpuit Transistor or associated components. Best to seek professional hellp.

Mar 31, 2007 | Sony FD Trinitron WEGA KV-32FS100 32" TV

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