Question about Sony KV-XJ29M50 29" TV

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Sony kv-xj29m50 the picture shrink to 21"

I have use for 4 year and it ok but recently the picture start blink and the picture shrink to 21" .pls help me.

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Problem is with the picture tube.

Posted on Jul 06, 2009

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Sony tv kv ha21p52 the picture is shrinking in bottom few seconds the set goes to stand by the led bilinking four times plz help me


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power led, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating, to many popular brand TVs and other devices. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given.

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1 Answer

Hi...I have a problem with my Sony Trinitron 29


the power supply section should be resoldered....must be loose contact..in power section...

Jan 26, 2010 | Sony FD Trinitron WEGA KV-29LS35 29" TV

3 Answers

Pictures shrinks.. Panasonic TC-20LM Television


Shrinking picture is a voltage regulation problem in the switch mode power supply, Possibly a cap used in the feedback circuit. Or an over current condition on the B+. This is a very tech intense repair because there is no magic bullet. If it is shrinking on bright scenes then you can bet it is a regulation problem, bright scenes draw more current from the power supply causing this effect. I would not suspect the horiz output because the regulation for this circuit usually comes from the main switch mode power supply. One diagnostic is to monitor the B+ going to the horizontal output and see if it fluctuates. If so you can bet it is a cap or optical coupler in the switch mode circuit.

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1 Answer

Latest version. DVD Shrink. Nero8 (Todays downloads) On two Laptops. Didn't have this problem with PC's.. Shrink working ok. Nero 8 Burning dvd's. Lap tops read /Play fine. Home dvd players to home TV...


try not to do anything or open other program while its dvd shrinking or burning....bcoz dvd shrinking and burning occupies lot of memory cache and cpu usage.

GOOD DAY

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1 Answer

Picture is there briefly then goes black with sleep timer blinking


your tv had a cold solder,so try to resolder the vertical ic. or vertical section as well.

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1 Answer

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just do this, resolder the whole circuit board and crt board.

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