20 Most Recent Sony KP-46WT500 46" Rear Projection HDTV-Ready Television - Page 6 Questions & Answers

Adjust Blue screen drive control on focus and screen box 3 on top 3 on bottom turn Blue down, But sony is well known for Bad Tubes!

You probably have a bad BLUE CRT. Due to the cost and the length of time it would take to repair, I would not invest the money into it. It would require a Qualified Service Person to come to your home and remove the BLUE CRT assembly and send it back to SONY to be rebuilt. Estimated cost would be around 800.00. I would check prices of a replacement set.
I hope this helps,
Skyassoc

it could be a few things doing that one a screen control assembly that is drifting try adjsuting the green screen control down

or it could be a defective green pictue tube or a crt board with components failing
but most likley its a screen control assembly failing
it will be the center control and one should say focus and the other three say screen
there hidden behing the speaker grill and a cover behind that

This is a very common failure on Projection sets. Its called a convergence problem.

You may have one or more of the following symptoms.

• 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.
• No Audio / No Video - Makes Chirping Sounds

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

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Type in toolbar Understanding Sony Blinking Codes there it will tell you How to enter self diagnostic Mode and what maybe wrong with TV

Check the fuses. If a convergence amp goes out, usually one or both fuses go as well.
I'd check the power resistors in the vicinity for opens as well.

It depends on whether you can do the repair yourself---it sounds like you have a bad convergence ic--this model uses two STK-392-560 convergence chips(You can buy both on Ebay for less than 15 dollars plus shipping.)

Most of the time just the two chips need to be replaced and the set adjusted with the remote.
Many shops will charge 300 or more for this kind of repair---This repair should be able to be done in your home---I have done hundreds of them---shop around and see if you can find someone who will do it in your home--if they say it has to go to shop keep looking. I do this kind of repair here for 200-250 depending on the set--I doubt you could replace this set for 200 but it is a economic decision.

If you have questions or need help contact me here.

I do this here for free so if this has helped you take a moment to give me a vote here.

SD TECH

convergence problem expect to pay around $300

Hello Tim this is a very common problem with the projection tv set, the problem is coming from the convergence board with faulty ICs that have to replaced in order for your tv set picture to work properly,they do sell convergence repair kits for your tv set but i would not recommend this the reason being is that if you make a mistake while changing out a component your whole tv set is gone not going to work anymore so for this i would recommend for you to call a near by tv repair shop and have a tech come out and change this ICs for you, after you change this ICs from the convergence board your tv set should go back to working normal on the link below you can check out how a convergence board looks like thank you hope this helps.

http://bestbuy.partsearch.com/content/pages/tv-convergence-boards.html

go here: this solution works for many sony issues (slight voltage adjustment is all it takes) http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html

Its a convergence problem. You may want to check the site www.tvrepairkits.com. Every thing they said every description was right on. The best money I ever spent and the confidence you get from doing it yourself, Its a great feeling of achievement not to forget the live messenger support is instantaneous, friendly and informative if you need to fix your tv go to tvrepairkits.com I fixed a philips 60 inch tv in 45 minutes, The convergecne chips were bad thanks a million. You guys saved me 250.00 bucks. I'll be recommending you to everyone I know!

No - its not the bulbs/tubes. I have a magnavox and had the same problem but fixed it recently using kits from www.TvRepairKits.com. I can't say enough about their kits and help. Without them I would have never been able to fix my TV set myself.


ML

This is most likely because you have an unguarded speaker too close to the T.V. If you have a speaker close to the television, try moving it around a little to see if the discoloration goes away. If that doesn't work, you can try moving a large magnet around the edge of the screen to move the CRT guns back into place. Best of luck.

Hi,

The curve is because the vertical adjustment is not on place. Most probably the soldering will be loose at that one. If you can open the monitor it is just doing a soldering at the lead points.


Thanks

Replace Both of your convergence ICs STK392-??? they are big black ICs will have part number on them also CK pico fuses they look like resistors but are fuses they will be yellow or green will be around ICs.

Hello mrsb422,

This sounds like a convergence problem and it is a little more complex then just a lamp. You will have to replace not only the convergence amplifiers but also the biasing resistors. This will require de-soldering and soldering of of components and there is a chance of damaging the circuit board is you are not careful. So I suggest that you have a TV repair technician examine and repair this set.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

visit your local service center. you cant do anything more up to this point

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

Increase the current flow to the blue color gun. If it is not adjustable it will need replaced and this is a major repair. You can try to reduce the red and green guns and increase the output transformer for a temporary fix, but save up your pennies for a replacement. Have a tech look at it before running out for a replacement because the SONY is the better model projection televisions.