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Question about Sony KV-27V36 27" TV

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Sony KV-27V36 27"

When the TV is turned on the screen splits; top half shows on the bottom. Somtimes bottom half is black or snowy and the other times it's black all together. Thanks.

Posted by taroon panctara on

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Anonymous

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Sounds like you got a vertical foldover and could possibly be the vertical output IC but most likly its one of the waveshaper capacitors. This repair is one that alot of repair peeps swap out caps one by one to find the defective one and some use a cap checker but the right way is to use a scope to see the waveform aplitude and the shape of the waveform. This is not a user repair as this set will get repaired down to the componet level as np boards toreplace except for the sound. Take into the shop if you dont mind spending an average of 75 to 125 bucks for this repair Good luck

Posted on May 30, 2006

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I have a Sony FD Trinitron 27' Model # KV-27FV310. It is approx 8 years old. After turning it on and watching a full screen for a few minutes; all of a sudden, a line came across half the screen;

top half missing is in vertical circuit of set---if it is a 27 inch and this old consider retiring it and replacing----other option is consider having a shop repair it--a rough guess would be as high as 150 dollars parts and labor is possible for your problems.
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When you turn the TV on the screen splits in two,

it sounds like one of your buffer boards are going bad. these are the boards that help put the picture on the screen. there are 2 boards an upper and a lower board. if you remove one and turn the tv on you will get half a screen. see then if you get the lines. please leave rating after you check.
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problems on the vertical section I can do it for $ 180
we need to replace the vertical integrated circuit and poblably some caps
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This is commonly caused by failing capacitors in the vertical deflection amp area and sometimes with the output drive devices.

An experienced TV tech can troubleshoot your set and service it for you.


Jerry G.

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I have seen this caused by 2 different problems. The vertical output IC could be bad but it is usually the CXA jungle IC that fails to cause this. Either way the set should be serviced by someone experienced in repairing Sony TV's.
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Screen split with black bar through center, top of picture shows in bottom

It sounds as you desribe, the vertical output IC and or the b+ feed capacitor off the Hi voltage transformer feeding the vert. IC its required voltage. Not a really hard job to replace, but not for a handi person to do. This should be left to the professional, as there are no user serviceable parts inside this set and with the HI voltage and the safety issues its best to call somesone to assist you with this repair. Good Luck
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SONY KV-27FV310: UPPER HALF OF SCREEN IS BLACK

You have a vert sweep problem and unless you know how to trouble shoot this cuircit bring it to a pro. I found out mostly in these sets that the vert output IC is bad.. Also sometimes the b+ filter cap off the fly is leaky and made the IC to fail. Another thing is Im surprised to hear you got a pic with the vert failure and a bright line in the pic!! This could be a big problem when the sets fixed so dont run it too long like this. It could burn a line all the way across the screen and you will see a dark faint line in your pic because of this. BE CAREFULL!!
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