Question about Sony Televison & Video

1 Answer

Sony Trinitron Colour TV, Model KV-29LS3OU The red light continues to flash after switching on. But the picture takes a long time to appear, 3-4 min. The audio comes on promptly. Also the picture quality and colour appear faded. Is it worth repairing? Thank you.

Posted by on

  • bhaskar_veda Aug 31, 2010

    Thank you. But as a novice to DIY can you give me a bit more instructions on how the solutions have to be implemented. One more thing I forgot to add: even after the picture shows up, the red light contines to keep flashing in intervals of 5 for atleast half an hour. The general picture clarity has worsened, for example during tennis matches when the scores are projected on the screen corner, you can't read it as it is blurred.

  • bhaskar_veda Aug 31, 2010




1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Sony Master
  • 17,130 Answers

Sure this is tough one as the model is old. But when the red light flashes the set is powering up and the line output transformer is bringing up the voltage to the CRT stages. The time delay is the decay of the voltage to the circuits mainly due to aging of the components--maybe capacitors- or a possible section of the video-Y board having a series of DRY soldering.
Now you can attempt to see to these issue to evaluate.
First of all one you are confirmed that only when the set warms up the picture starts to come in, then we can simulate the fault by using a hair dryer to warm the suspected parts, mainly try on the section of the Y amp IC and the LOT section.
Checck for a faulty 22mfd or 10mfd with 25o volts capacitor on the LOT secondary to the CRT to be faulty, replace.
This can cause delay and poor picture quality.
Also if the contrast section of the Y amp is faulty you may get this faded situation of picture and colour.
Next use a good soldering iron to touch up the soldering of the
Y/C amp. This can be having poor joints and can be a possible suspect too.
The final part can be the picture tube itself but the fading would have very gradual and with a particular tint in domination.
I hope the tips can get you to work and find a solution.
The Tv is a good one and if the set works it can still give more hours of use.

Posted on Aug 31, 2010

  • Donald DCruz
    Donald DCruz Aug 31, 2010

    There is control named HSTAT on the CRT base and it can be trimmed to obtain a clear image without an out of focus picture.

    The TV has high voltage and sensitive circuits and I would not advice you to look into without any experience for fear of accidental damage to circuit or to you .There is very high voltage and lots of precatuion if your a novice.

    Please take this as my personal advice and seek help.

  • Donald DCruz
    Donald DCruz Aug 31, 2010

    Dont forget to rate me for all the advice.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Sony fd trinitron colour television kv 29ls60e

The power supply probably is failing.

Jan 10, 2014 | Televison & Video

1 Answer

The colour of our sony tinitron color tv model no.kv-xf21m83 has got fading (Red colour disappeared )and the indicator flashes red a number of times between 3 second intervals and the est is sparking

this sounds as if the tube (crt) as a intermittant short in the red gun , try tapping the neck of the tube very softly with a screw driver handle, this just might just clear the fault
regards windyhouse

Apr 23, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Sony Wega KV-XF21M83 21" Color TV red LED flashing two times

mt sony trinitron power light is blinking from green to red twise and then pause for 3 seconds and then blinks again from green to red

Jul 05, 2009 | Sony FD Trinitron WEGA KV-32FQ70 32" TV

1 Answer

TV switch light flickers 11 times but no function

Hopefully it is only a board component that needs replacing and your dry joints that need re-doing. I would advise that you take it to a television repair shop as this type of repair can be very complex (replacing resistors and capacitors just to name a few).

Dec 03, 2008 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Sony Trinitron Colour TV Stopped showing and switch light flicker

The vertical output IC has failed/Power to the vertical IC is out/ or there is bad solder on the pins of the vertical output IC.

Dec 01, 2008 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Standby indicator light on TV flashes - Sony TV

    Please check fisrst that indicator liight (LED) blinks how many could be from 1 to 8 times and the interval would be of three seconds.So, count the led flashes how many times and then tell me i will try my best to find and fix the solution.


Nov 17, 2008 | Sony KP-53HS30 53" Rear Projection...

1 Answer

Sony FD Trinitron Wega model KV-34BR800

Sony Wega Triniton KV-32FS100 TV

For the last week my TV has been going to a black screen for 10 seconds or so then the picture returns. It has been continual. Last night it stopped going to black screen, but now the standby light flashes 5 consecutive times and the color went haywire. A lot of red and everything that is suppose to be black is green.

I did a soft and hard reset with no success. What's wrong and is it worth fixing? Bought new in November 2002.

Aug 01, 2008 | Sony FD Trinitron WEGA KV-32FS100 32" TV

1 Answer

Sony Trinitron KV-24FS100 red light flashes 4 times

your tv had a problem.if you have a knowledge in electronics, check or replace the horizontal transistor beside the plyback. it is a black square parts with 3 pins.

Jul 03, 2008 | Sony FD Trinitron WEGA KV-24FS100 24" TV

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

332 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts


Level 3 Expert

102366 Answers

The Knight
The Knight

Level 3 Expert

74630 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Sony Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides