Question about Sony FD Trinitron WEGA KV-27FV310 27" TV

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  • chats72 Dec 27, 2007

    I have a SONY KV27FV310. It's 5 - 6 years old. It worked well until yesterday. The top half went black. Does any one have any ideas? When i turn the tv on a a white horizontal line appears. It doesn't cover the entire screen, both sides (about 2") remain black. The picture appears and the line fills to reach both sides, in at the same position, somewhat thicker, with a bit more information. The top 45% (+/-) remains black.

  • Jim Driscoll Mar 02, 2008

    I have the exact same problem with the same tv which is about 3 years old. Thanks for posting the fix. I will try it.



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We have a Sony 36" FD Trinitron Wega. Of late, it takes a long time for the picture to come on and after it does it periodically goes black and comes back on. This occurs for about the first four or five minutes after being turned on. Should I look into getting a new TV?

Posted on Jan 14, 2010

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It's called a loss of vertical deflection. In this particular model your set uses a TDA8172 for a vertical Ic, at board position Ic561.
Replacing that and check or replace the feed cap out in front as needed should restore full deflection. It's not an expensive fix for a qualified shop either.. But my advice is take it into them and save the pu/del charges. And call around to see if they have the Ic on-hand and about how much it will be to replace it before choosing the shop to take it to..
Let me know how it goes!

Posted on Nov 22, 2007


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Posted on Jan 02, 2017

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Sony Trinitron KV-27FV310 won't stay on, standby button flashes around 10 times, help please?

Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board

Jun 18, 2012 | Sony FD Trinitron WEGA KV-27FV310 27" TV

1 Answer

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.

May 01, 2012 | Televison & Video

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The top half of picture is completely back, please

you have a vertical problem it could be a cold solder joint on the vertical out put ic or a component failing in the circuit
if you have the tools a soldering station and some know how you can fix this

or you may want to contact a local for help with it

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1 Answer

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Horizontal hold IC and circuit is failing The remote signal will cause it to spasm because of this faulty set of parts. It needs professional intervention to fix this properly

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Sony KV-27FV310

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Nov 18, 2007 | Sony FD Trinitron WEGA KV-27FV310 27" TV

2 Answers

Sony TV - Loss of half the picture

sarge, it sounds like the vertical output IC went bad on you. If it was a bad connection or a bad capacitor, your picture would have been a straght line across the screen. They call the output section of the IC a push-pull type of amp, so the top half of the sweep IC went out. If you have had some soldering experience, and or experience with solid state repair, locating the bad IC and replacing it is no big deal. If you havent, stay safe and call in a pro to assist you in this repair, as there is alot of high voltage inside this puppy that is still present even if the set is unplugged. It should not cost an arm or a leg to repair this set. An honest repair on a set like this if you take it in should not exced 125 to 150 bucks. Good Luck PS Please dont forget to rate this thread.

Oct 22, 2006 | Sony FD Trinitron WEGA KV-27FV310 27" TV

2 Answers


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!!

Mar 25, 2006 | Sony FD Trinitron WEGA KV-27FV310 27" TV

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