Question about Sony FD Trinitron WEGA KV-34HS510 34" TV

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Wont turn on. There are 5 and 6 blinking stand by

My Sony Trinitron KV-34HS510 TV wont turn on. There are 5 and 6 blinking stand by lights.

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My sony kv-34hs510 tv wont turn on.ther are 6 and7 blinnking stand by lights.

Posted on Jul 16, 2010

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Hi, I have fixed loads of flat screen TVs that will not turn on. the cost to you will be less than 10 euros. at the most, if you are lucky with your supplier maybe pence, the first TV I fixed cost 26 cents to repair, but it depends on the amount of parts required. My brother Bernard, found the main cause of these faults a few years ago. Obviously there could be other things wrong with your TV but of all the ones I have opened up it has been this cause. firstly lay your TV down off the wall or brackets face down onto some thick blanket\'s or other safe material that will not damage the screen, be careful of static electricity, ( don\'t go rubbing blankets then touch your TV. ) unscrew all the Phillips head screws and remove the plastic back from the TV. Remember to leave the television OFF for at least 10 minutes, I would allow more after removing the power for all the circuits to lose power and not give you a shock. Now the older you TV the heavier it will be and the more circuit boards it will have, the newer types are lighter and you can possibly lift a 40\'\' yourself and will only have two circuit boards. Examine the circuit boards, if you see big black burnt areas etc., the unit is fried,

But this is unlikely, what you want to look at is the capacitors, they are like tiny coca cola cans, there will be various sizes, all with a cross in the shiny metal top. this is to allow the units to expand when they are defective and not explode all over your printed circuit board. If you have no electrical-mechanical abilities and are going to chuck the TV it is still worth having a go .

Once you see damaged capacitors you You will need to buy a soldering iron, solder and the capacitors. Look for expansion on the tops were the cross is, you will see the good ones have perfectly flat tops. I have repaired units with slightly bulging capacitors that I did not replace and have only replaced the very bad ones and it fixed the TV. but these others may go in the future. But have not done so yet. The really big give away is anything that has leaked out of the cross area like a brown stain,

look for these symptoms:

  • Bulging or cracking of the vent on top of the capacitor.(The "vent" is shaped by an impression stamped into the top of the can, forming the seams of the vent. It is designed so that if the capacitor becomes pressurized it will split at the vent\'s seams, relieving the pressure rather than exploding.)

  • Capacitor casing sitting crooked on the circuit board, as the bottom rubber plug is pushed out.

  • Electrolyte leaked onto the motherboard from the base of the capacitor or vented from the top, visible as crusty rust-like brown deposits.

  • Detached or missing capacitor casing. Sometimes when the vent does not open, a failed capacitor will literally explode, ejecting its contents violently and shooting the casing off the circuit board.

The reason you have this problem is this: A researcher is suspected of having taken the secret chemical composition of a new low-resistance, inexpensive, water-containing electrolyte when moving from Japan to Taiwan. The researcher subsequently tried to imitate this electrolyte formula in Taiwan, to undersell the pricing of the Japanese manufacturers. However, the secret formula had apparently been copied incompletely, and it lacked important proprietary ingredients which were essential to the long-term stability of the capacitors.The bad formulation of electrolyte allowed the unimpeded formation of hydroxide and produced hydrogen gas.

To replace your faulty capacitors look at the side and you will see the numbers 1100um and 24volt, or other readings 200um and 24volt. whatever it says you need to order exactly these capacitors for replacement, they are very cheap and normally you will get 5 in a packet.

You will need to unscrew the particular circuit board and unplug any wiring looms attached, take a photo of what it looks like before you do this and maybe mark each plug with a permanent marker or label maker so you know were everything goes back to ,but it is normally not very complicated.

Then look at which side negative is on, there is a plus and negative side, the negative normally has a long stripe down the side, then unsolder the old capacitor, try to keep the hole clear of solder by pushing a stainless steel pin into hole as the solder will not stick to this. then insert your new capacitor and re-solder it carefully into the board. Make sure not to solder other circuits or units together when you do this. place your circuit board back I and replace the back and switch it on, TV fixed for pennies. Sorry about the long winded answer.

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This is not all my original work and comes from originally: my Brother who let me know about it Bernard and various internet sites, Wikipedia, bad caps and others. It really does woWont turn on. There are 5 and 6 blinking stand by - 54ba083f-30cf-42e6-bfd3-7c993e940a26.jpg have not fixed.


Posted on Nov 30, 2014

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