Question about Sony KP-51WS510 51" Rear Projection HDTV-Ready Television

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My screen is blured (focus problems)

My tv was working good this morning and when i got home i turned it on and it was blury. i tried the flash focus and it did not help. i also tried the adjusting the convergence manually option but the color red crosses were ok in the center but the outside crosses (red only) were to the right of the white would let me go up or down but not left or right to match them back up... so that is my problem if anyone could help me that would be great thanks for your time...

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Re: my screen is blured (focus problems)

This sounds like one of your convergence IC's has burned out. There are 2 IC's in the set and the one that handles RH (Red Horizontal) has stopped working. The IC should be replaced and the set realigned by someone with experience.

Posted on Jun 28, 2007

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Picture is bluring...especially the writing..

If you are comfortable working inside the set, locate the flyback transformer (part with large red wire coming out the top.) This part should have 2 controls on it. One should be labeled screen and the other focus. Try adjusting the focus control a bit. If that fails to resolve the focus, please update this with the make and model and additional details will be supplied.


Jun 13, 2010 | Zenith IQ5299DT 52 in. Rear Projection...

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Toshiba 50hdx82 tv touch focus error blue is bowed.

Convergence is dead.Know how to solders.Must replaced the 2 Convergence ICS,and all it resitors.To do it ur self repair buy a convergence kit at Tv repair, shop will cost u $300 for parts and labors.

Feb 04, 2010 | Toshiba 50HDX82 50" Rear Projection...

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Cannot get the set to focus. Colors are blured

Sounds like a convergence misalignment, go into the tv menu and look for other adjustments sub menu and follow the on screen directions,this is a simple procedure but will take a little time to get it adjusted just right. Directions are also on pages 20 and 21 in your owners manual. Good luck!

Nov 26, 2009 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

My tv needs readjusted (color,focus,etc.)Is there an easy way to do so myself? i got a 1986 45'' RCA projection started of with just a blury spot across the top but after i messed with it the whole...

First pull back Look for screen and focus block you will have 3 controls ontop for focus and 3 controls below for adjusting screen drive to each Tube R/G/B
turn color off on Menu NOW try to Adjust the red,greenand blue screen drives as close asyou can to a Black and White picture then turn Color back on in Menu also adjust Focus for each Tube Be sure to Clean Top of Tube Lenses of dust&dirt Just in case Post me your Model and Chassis Number it will be on back of TV some RCA Focus&screen drive Block maybe in front of TV if so remove front bottom panel their you will see control box.

Nov 10, 2009 | Projection Televisions

1 Answer

Half of the screen is clear and left side of the screen is blury

Its a Common Problem with Projection Tv's ~ If your flash focus is not correcting the problem, And It can Not be Adjusted in your service menu: under Manual Convergence, your IC chips and maybe a few resistoirs may have failed and need to be replaced!... onegeo

Jul 07, 2009 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Left side and right side are blury.

With projection sets, there is typically several settings for which you can display an output. You probably have a "wide" or "stretch" as a setting for the tv. What you want is normal, or some setting which doesn't result in a stretch. Widescreen projection tv's try to stretch 4:3 output into the widescreen setting, but usually this just results in the middle being in focus, and the outer 20% to be stretched on each side, bluring the edges.

Try to manipulate as many "tv settings" as possible. For most sets this is only available with the original remote. If you don't have the original remote, changing these settings could prove difficult.

Apr 05, 2009 | Panasonic PT-47WX42 47" Rear Projection...

1 Answer

Focus block is at max still blue

the convergance amplifier have failed there are two of them they need to be replaced. there may be some pico fuses and resistors also. convergance failure is the most common rear projection tv it makes the set appear blury.

Feb 21, 2008 | Hitachi 46F500 46" Rear Projection...

1 Answer

The BLUE crosshair will not focus,

go here
this is for sony but your should be close enough. you want to manually focus the blue gun.
please mark post fixya!

Feb 11, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

My projection tv sony 51 inch red out of focus

Your convergence output IC's have either shorted out or opened up, either way they will have to be replaced and possibly a resistor or two. One distant possiblity is the DCU or the Convergence Yoke, but most likely the IC's. You will probably want a tv repairman to do the repair as there is some soldering to do and some paste/ IC's to install/ calibrate. A repair like this could run from $300 - $500 for IC's depending on who does the repair, The Yoke or DCU would cost a couple hundred more.

Jun 22, 2007 | Sony KP-51HW40 51" Rear Projection...

2 Answers


Your problem could be a bad focus pack, a bad convergence board or a problem in the power supply board. If you know how to read a schematic diagram, I suggest that, that is the first thing you should invest in. If you do not understand how to service solid state circuit boards, read a schematic, or use a multimeter, my best advice to you would be to call in a servicer for Samsung, as there is a lot of high voltage inside these puppies even when you unplug them. This is not a place to be experiementing around inside of. Good Luck with this repair.

Jun 08, 2007 | Samsung HCN5529W 55" Rear Projection...

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