Question about Sony KP-61V90 61" Rear Projection Television

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I have a sony kp-61v90 projector tv and the colors are making the red stick out, feels like a 3d, any help?i kalld a tv repair which charged me $50 and said to repair $350 which is pretty crazy....help

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I'm assuming that your complaint is the red is predominant over the other colors- if it is a rear projection set, there are three tubes [r,b,g], and each one has its own flyback with a focus and 'g2' control on it. try backing down the red g2, and if the picture is too dark, turn down the color control [so you should have a black and white pic], then adjust the g2 controls until you have a satisfactory black and white pic- after that, when you turn the color back up, you should have a good pic. sometimes. adjusting the g2 can affect the focus, and there is a focus control on the flyback. there are also optical focus [moveable lenses] on each tube, but they are primarilly for initial setup of the set, and should never have to be adjusted, unless the tube has been replaced. fyi- i happen to have a complete set of sony rear projection tubes [r,b,g] complete with lenses and neck coils i am currently trying to sell, but it doesn't sound like you need tubes at this time, but it's something to keep in mind, because these tubes are becoming extremely rare and hard to find, and cost upwards of close to a thousand dollars a piece, i'm selling the complete set for four hundred dollars. good luck!

Posted on Sep 05, 2009

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Welcome, and thank you for using FixYa!
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Sony KP-61V90 61 in. Rear... Problem


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.
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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.

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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.

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possible power supply or short on the b+ run,check for shorted horiz. o/p tranistor.

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