Sony tv has no power on the power circuit daigramme

Hello Sagar,
green led means tv powered on and status ok.
Red blinking light almost always means defect, overcurrent or overload.
6 blinks for Sony lcd flat tv means trouble in backlight circuit, or backlight inverter (backlight illumination or lighting makes your tv screen visible).
common problems in the inverter circuit, which drives the backlight, or shorted drivers, or short-circuit transformers or open circuits.
You should find the problem in the inverter circuit, or in the power supply board or in the main board.
Also look for bad capacitors (electrolytic caps) which are bulged and swollen on top.
Decoupling plugs from printed circuit boards can help you in finding the problem board by elimination method.
If you power up the set after unplugging certain plugs on f.e. the inverter board , this could result in getting a green power led and concluding that this board is faulty.

succes,
Walter from Antwerp, Belgium.

One thing you can try is to remove all cords attached to the tv including the power cord. wait a few minutes( maybe say a short prayer) then plug the power cord back in and try turning on the tv if it powers up. it maybe a short in one of the units that were plugged into the tv. If it still does not work it maybe a circuit board problem. Sony Bravias have been plagued with a lot of circuit board issues. type in Bravia problems on any search engine and you will see what I mean. You may be able to get it repaired but you best course of action is to buy a different tv. a Vizio or Samsung or anything but a Sony

If that is a chip in the power supply unsolder all pins and get a pin out of it to test it for a short--if shorted and no short to ground at HOT replace it.

Best take the tv backcover off,check all circuits boards for lose wires or broken circuits boards.Secound,take a air hose or a fan turn on high,blow in all the circuits boards.Third put the tv back together again.Wait about 20 mins,plug in the incomming broscating signal cable first,than the power a/c cord.Turn the tv on.The tv should work.That should solved ur tv problems.

Might not be the tv.Sound like u have circuits breaker overload,take the tv to other places in the house and tries it out.See how it effect the tv,what happen to the tv.

sony model kvef 29m91 trinitron tv i need remot condrol model no

resolder the crt circuit and also the video circuit,or find the trouble in the video circuit if there's an open resistor..

your tv has a  short  circuit, the power supply see that and put away the polarizatio n , you have to check  if transistor of power on flyback transformer is  good
or bad - delfo

the symptom is usually caused by a breakdown in the power supply circuit. in most modern receivers (transistorized and/or ic), it may also be caused by a breakdown in the horizontal deflection circuits (hor. oscillator, pre-drive, or drive circuits). supply voltages for the tuner, vif,sif, and vertical output are usually supplied by the horizontal output circuit. but if you doesnt know anything about these stuffs, better bring it to a qualified service technician

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