Question about Sony FD Trinitron WEGA KV-32FS120 32" TV

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Sony Television After the television is on for a short time the screen will go black. turn TV off for a while and picture returns

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Re: Sony Television

Unfortunately that's an indication of the crt going bad in a Sony.
You can turn the G2 voltage down on the flyback or have a tech rejuvenate the picture tube but either of these are only a temporary fix..
The flyback is the rather large transformer with a red (anode) wire coming from it and attaching to the crt. (looks like a suction cup).
There are two adjustments on the back of the FBT, one is screen (or G2) the other is focus. With the unit on turn the G2 counter clockwise just a little and the picture will get slightly less bright. That should stop the picture from blinking out - or doing so as often. But again, it's only temporary!
Good thing Santa's almost here... :)

Posted on Dec 12, 2007

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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.

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Refere to Sony Blinking Codes :
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Hope can solved the problem....


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Mar 01, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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tbrace, your picture tube is getting a little tired, the "IK circuit" is causing the blanking of the video because the tube is not returning a large enough signal back to the IC that monitors it. Theres only one fix (besides replacing the tube) for your set and that is to turn up the screen control. You have to remove the back from the set and on the right hand side there is a large plastic part called a flyback transformer, with a heavy wire coming out of the top which goes up to the picture tube, mounted on the front of this transformer is 2 black blastic "philips type" controls, one over the other look closely and one will be marked focus(do not turn that one) and the other is the screen control, turn the set on and SLOWLY turn the control clockwise until you see a bright picture with white lines in it, once you see the lines turn it back until they disappear, (check several channels to be sure they are gone) your done, may last 3 weeks, may last a year, it`s all you can do, BMW Rider

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What is the model or chassel number it be a few thing H.O.T Resistor Caps etc..most likely horizontal output transistor.

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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

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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.

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If your Sony TV is hooked up to a good signal and is set up correctly, but only clicks and has no picture or sound, and even the menu will not show up on the screen, then it means that the main power supply has stopped working. I usually find that a small crack in the solder joint of the horizontal drive transformer or a shorted flyback will cause the large horizontal output transistor to short out, and this shorts out the switching transistors in the main power supply which then causes the Sony 0.1 ohm fuse resistor to open up. I have also seen power surges or power failures (brown-outs) cause the switching transistors to short out. In any case, the set absolutely should be serviced by someone experienced in repairing Sony TV's.

Aug 05, 2007 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

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If the power supply IC (MX0842) shorts out, it blows the Sony 0.1 ohm fuse resistor. The set will click but have no sound or picture and the LED will blink 5 times. The power supply should be repaired by someone with experience with Sony TV's.

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