20 Most Recent Sony KP-51HW40 51" Rear Projection Television - Page 6 Questions & Answers

It can be fixed, if picture is 3d looking it is what is called a convergence problem.

See attached photos of typical ones. This set uses two of the STK-392-560 convergence IC chips.

It can be a do it yourself repair but this does require being able to solder.

Parts cost would on EBAY be under 25 dollars.

Let me know if you want instructions, I have photos of the parts and the board they are on.

see attached photos.

SD TECH








THE CHIPS WILL LOOK LIKE THIS BUT HAVE STK-392-560 PRINTED ON THE FRONT IN WHITE.

Tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts must be replaced on the convergence board to fixed the convergence board to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both. Repair kits with instructions are also avail from www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

• 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.
• TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.





SOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common 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.


TV set after fluid change



SOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

This is a convergence problem and can usually be traced to either poor solder connections at the convergence ICs or defective ICs. Please update this with the exact model number so that I can post the part numbers and costs.

Thanks,
Dan

If the TV works fine during the 5 minutes its on then your power supply in the tv is heating up and shutting off. If you have some mechanical knowledge you can buy another power supply from Ebay for around 35.00 and replace it. will require some soldering

That model of Sony has a protection feature that shuts the whole TV down when voltage problems are detected. In this case, shutting off entirely usually means that something is very wrong with the power to the entire TV circuits.
You can call Sony for the name of repair companies in your area. A diagnostic visit from their factory rep or designee will usually run about $150 in the US. They'll take that amount off of the total bill if you go forward with the repair. Replacement of the video power control IC boards run about $250 in parts, plus the initial $150 labor charge, for a total of $400 for a typical repair.

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All projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

• 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.
• TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.






Common 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.


TV set after fluid change



SOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

the video color distortion with the bowing in the center is called a convergence failure. the 6 blinks indicate a power supply shutdown for high voltage protect. the 14 blinks is just the tv trying to turn back on. you may be having to problems with the convergence and the 6 blinks or it may be related because the convergence amps can cause shutdown if they are shorted. i suggest calling a serviceman per the possible tow different failures. good luck

hello am rico, no you cant, unscrew all the screws from the back and bottom front. should be able to open it. if you need more help let me know. 602-810-7149

These sets have a history of bad picture tubes, the blue is most common, there is a way to without replacement of any parts to attempt to correct this.

you have to remove the entire grill on the front below the screen; it is usually held in either by two screws at the front (under little plastic caps) and or screws on the back on either side.

The grill will pull out and is engaged with large plastic tabs at the top; with it out since the front keyboard is mounted into it you lift and tilt it to the left. Remove the inspection plate behind it: look for the screen/focus block (see attached photo) and note the six controls: three are screen and three are focus----do not touch the focus ones.

They are usually marked (may be hard to see: r,g,blue) You want to locate the BLUE SCREEN CONTROL and with the set on on a unused video input turn the screen control SLOWLY (usually to the left) until you see no blue in the background; if you do it correctly all you should see is the Video 1 etc.


The idea here is to lower the blue screen setting just slightly-if it works you may only be buying some time as these sets are prone to problems like this.

I have done this several times and many see a few more years of use before they have to be replaced.

Let me know before you attempt this if any questions.


SD TECH

Check all your projection lamps. If defective, you can pick up from many distributors, ie Electronix: http://www.electronix.com/

when it shutdown how many red blinks are on the front panel. if there are 5 blinks then you may have issues with the picture tubes.

This kind of problem occurs due to failure of convergence output ICs in Sony KP-51HW40 tv.
Replace convergence output ICs to solve tv problem.This set uses two of the STK-392-570 IC chips for this (convergence problem)
Local tv repairman will do this job if you have no experience of electronics stuff repair.

not sure w this model but check your owners manuel, sounds like lamp is out

What you have is a very common convergence issue which could either be rather spendy if you take it to a technician like me. It usually costs approximately between $300-$400 if yo bring it to someone who knows what they are doing OR you could go to www.tvrepairkits.com and order the convergence repair kit for about $75-$80. Ed will set you up with the resistors, the integrated circuits, thermal paste, and step by step directions. It would take a novice about an hour and a half to complete the repair and you would save yourself some money. Sorry, there is no scan option to fix it.

Hi,
I can help you to solve your Sony tv problem.
Is it Sony KP-51HW40 tv or any other model?
How many times red light start blinking after three seconds long pause?
Let me know to proceed, can you check voltages with multimeter in tv circuit board?
Thanks.

2 blinks on this model means Horizontal output transistor Q8024 is shorted(Deflection board) . That explains blue screen with no image and immediate shutdown. Also to be tested are transistors at locations Q8035 and 8038.If you are seeking the assistance of a tv tech to fix it, 150$ would be an ideal charge as this repair is relatively easier than most other component level repairs on this set. If you are in the US please get me your zipcode so that I can get you a list of techs in your area.

It has a shorted ic check the convergence ic it has marking of stk and the regulator str.