Question about Sony KP-43HT20 43" Rear Projection HDTV-Ready Television

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Screen is showing with a convex bend and the craw screen has all writing showing up twice

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  • Sony Master
  • 3,459 Answers

This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

screen is showing with a convex bend and the craw - bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Posted on Dec 21, 2009

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  • Master
  • 10,594 Answers

It sounds like convergence out ICs got defective and requires replacement.
If you can do soldering work on circuit board to replace these two ICs on D board, let me know to provide you more info.

Posted on Nov 17, 2009

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3 Answers

I don't know what concave means


The curve of a lens is either convex or concave, that causes light to be focused depending on the direction of the curve.

So to answer your question, concave is just a bulging 'out' shape.

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Sslc maths


What follows is true for CONVEX polygons.
Let n be the number of sides of a convex polygon, and let n be greater than or equal to 4, then
The number of diagonals is given by n*(n-3)/2
Using this rule, write n*(n-3)/2=20. Clear the fraction, open brackets. You end up with n^2-3n-40=0.
Factor the polynomial or use the formulas for the quadratic equation to find the roots as n=-5 or n=8. Discard the negative root because n must be positive.

Oct 05, 2013 | Computers & Internet

1 Answer

How do convex polygons differ from non-convex polygons?


A convex polygon is one with each of its interior angles less than 180 degrees and every line segment between any of its two vertices remains inside or on the boundary of the polygon.

150px-pentagon.svg.pngExample of a convex polygon (WIKIPEDIA)


A concave polygon will always possess an interior angle with a measure that is greater than 180 degrees.

150px-simple_polygon.svg.pngExample of a concave polygon (WIKIPEDIA)

Aug 11, 2011 | Computers & Internet

1 Answer

All discs read bad discs and I read that perhaps the unit needs cleaning. Can this be fixed with a CD cleaner?


I have never witnessed a CD cleaner actually working, Open the unit up and clean the lens area manually. It is convex and recessed. the laser pickup seems to attract small fibers, by static electricity, these foreign particles bend the light and prevent CD reading.

Jul 13, 2011 | Daewoo DV-6T955B DVD Player/VCR

1 Answer

Trying to locate the oil plug on a 1992 mercury tracer to change the oil


THE OIL PLUG IS ON THE OIL PAN MAY NOT BE ABLE TO SEE UNTILL YOU CRAW UNDER THE CAR. THEY USUALLY ARE ON THE DRIVERS SIDE OF THE OIL PAN ON THE SIDE OF THE PAN. YES YOU WILL HAVE TO CRAW UNDER THE CAR

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2 Answers

Latitude D600 beeps twice


that may be because of a bad connection with the harddrive thats easy to fix you just take the harddrive out and blow the connecting surface clean then it should behave normaly agian:)

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Epson C1100 - Vertical faint stripes on colour photos


see if this solution fixes the problem.
Also clean the print head using instructions in the manual
http://www.fixya.com/support/t241840-smudges_color_printing_black_ok

Mar 04, 2008 | Epson Aculaser C1100 Printer

1 Answer

The picture is convexed,or hour glass.


Sounds like problem in B+ voltage line to horizontal output transistor. Possible bad filter capacitor or leaky diode in power supply.

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