Sony FD Trinitron WEGA KV-34XBR800 34" TV Logo

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Posted on Jun 11, 2008
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Arched picture on Sony KV-34XBR800

Picture looks somewhat like a convex fun house mirror--arched up in the middle. Also blue haze in upper left corner, red in upper right. All channels (OTA) the same. Adjusting video settings has no effect. Before I haul this large appliance to the repair shop, any obvious diagnosis? Thanks

1 Answer

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  • Master 10,594 Answers
  • Posted on Jun 11, 2008
Anonymous
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Joined: May 26, 2008
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Your TV has problem in Pin-Out area. I know its technical term but I have no other words to explain it. TV needs qualified technician to fix it.

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I have blue arched lines and blue screen

HI:
Your problem is the blue CRT or picture has gone bad, you will need to have the picture replaced, there are three tubes in this model rear projection television. Red, Green, and Blue. Replaceing the blue tube is the only option for normal operation to resume. It may be hard to find the tube, but you can try contacting this website for the part www.vdc.com, they manufacture and usually have stocks of sony picture tubes and rebuilt ones as well. The company's name is Video Display Corporation...
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Picture bowing in center from top down about 1 inch in middle, ok at edges, also looks as if degause is inoperative with colors on left and right (purity) --------------------------------__________________...

This is a convergence problem. Look for poor connections at the convergence ICs. Try resoldering the pins on the ICs. If that does not resolve the problem, replace the ICs.

Dan
4helpful
2answers

Color distortion and arched picture

Your TV most likely has one of two possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

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2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.
0helpful
1answer

Arched picture

loosed solderings on the main board or the problem with convergence ic
0helpful
1answer

Color distortion and arched picture

It is problem of failure of convergence ICs or related circuit. Please confirm model number of your TV that is Sony KP-57WS500 to help you out.
It would be nice if you could past TV snap shot here for easy understanding.
Thank you.

0helpful
1answer

White arched lines appearing on dark/black screens.

it sounds like you are seeing the vertical retrace for all three colors together (white). Its possible that all three screen adjustments (red, green, blue) are off, but I suspect a problem with the screen power supply.
there is also a recall on this set
http://esupport.sony.com/perl/news-item.pl?mdl=KP51HW40&news_id=24
0helpful
1answer

Sony Rear Projection Screen

replace the stk ics. they are located inside the tv with lage heat sinks. i do believe sony runs stk392-510. youll have to look at the ics to know which ones for sure.
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3answers

SONY KP57WV600-Turns Blue

yes ,it sounds like screen adjustment or focus block, should be around $200- $325 to repair.
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