Question about Philips 55PW9363 55" Rear Projection HDTV-Ready Television

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Red CRT board not working. Blue seems to be going also.

I was given the TV knowing it needed to be fixed. Did some research here and figured it was the convergence chips/resistors. I ordered the kit, replaced everything (very simple) and the TV was working.."good". I knew that i was going to have to re-converge the colors the best i could but i could not get them perfect. When i got them the best i could the color was still off. I think the blue coolant needs to be replaced because that is the color that seemed to be missing the most. The green is very good. Well, when i started adjusting the colors on the focus block i think i blew something on the red crt board because the red will not come on at all now. I might have adjusted the color to high. So, now i need to order a new crt board and change the blue coolant.

I don't know how to change the coolant. If anybody knows i will be greatful.Also, should converging the colors be "easy" with the convergence screen or does it need to be done by a professional?

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  • mike_santine Jan 30, 2009

    where is your "area". The shops around me want $50 just to tell me what's wrong and then they'll"go from there".

  • mike_santine Jan 30, 2009

    Thank you very much for your help.

  • mike_santine Feb 16, 2009

    My local shop just told me he wanted $100 each to change the fluid. Does that sound about right? He also said that is doing a "house call". I saw the kit at for $50 for the 2 bottles and I think i'm going to do it. It's worth a try. I'm now on a mission with this thing!



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I changed oil also...If you can read and have eyeballs to view the included pix from its a pretty easy fix. Im only a little tech-savy and it seemed to be ok. Just be careful when removing/replacing plugs for the oil green plug "feet" cracked and had lil oil leakage when it warmed and expanded the fluid causing a short in the middle board. In seach of PN-1F10991 now, lol.

Posted on Apr 10, 2009

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Your TV most likely has one or more 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.
Red CRT board not working. Blue seems to be going  - 701cb04.jpg

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 directiRed CRT board not working. Blue seems to be going - 2c07611.pngnvergence 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 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.
Red CRT board not working. Blue seems to be going - 578ba6c.jpgef="" >Picture of a set that needs the fluid changed.

TV set after fluid change


2c07611.pngSolution #2

What you will need to do is replace the coolant and clean the crt. You can get a repair kit from that includes replacement coolant, photos. instructions, etc.

Posted on Feb 16, 2009

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Had the same exact problem after replacing the coolent fluid in blue and green
i found that the red picture tube socket needed to cleaned with electronic cleaner
and ran some sand paperon the picture tube prongs and make sure the prongs are all straight before you plug the socket back in
seems to be working ok so far

Posted on Jan 31, 2009

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Converging the unit is pretty simple,but changing the fluid is a pretty challenging job if you have never done it before.Adjustments on the focus/screen pack are unecessary for a convergence job or even a fluid change.As a servicer I see more televisions ruined by individuals that try to fix them.I figure that you have about $75.00 in parts invested in this unit already and it`s still not fixed.If you order the fluid you are looking at another $30.00 so you are $105.00 in the hole and the unit may still be unrepaired or unrepariable.I repair these units on a daily basis and in my area I charge between $225.00 and $275.00 for this job.When the job is done the unit has a like new picture.If you want to invest in a television that someone gave you I figure that letting a professional do the job will benifit you in the long run.Make some calls and find a service center that is confident in doing this repair.I know that there are some shops that won`t change fluid due to it`s difficulty level.I fix these units all the time and it is well worth it to my customers because they end up with a like new set.As you may have researched the problems that Phillips projection units have are very common (convergence amps,and fluid).After these problems are corrected you can easily get another few years out of the unit.Good luck.

Posted on Jan 30, 2009

  • Albert Vasquez
    Albert Vasquez Jan 30, 2009

    I am in the South Texas area.As a shop owner/operator I can only make money if I repair your set.Shops make more money repairing sets rather than giving estimates so most shops want to actually fix your set.The problem that you have is now you have another problem as well as the original problem (no red).You have money already invested in this unit and I assume you`d like to get your money`s worth.I can tell you that if you did turn the red screen control up too high on the screen/focus pack, the unit would simply shut down and not cause any damage to the red CRT or CRT module.A shop that charges an estimate fee requires this due to estimate refusals.Basicly it`s a way to prevent people from dropping off junk that they can`t get rid of and to weed out the serious customer prospects. It takes time to go through these units and give an accurate estimate especially if someone else has been in the unit. The $50.00 est fee should apply to the final repair cost should you decide to go with the shop est, if not it goes towards the time invested in looking at the unit.Let the shop know that you have educated yourself with what may be wrong with the set, and let them know up front what you have done to the unit and how much you are honestly willing to put into the repair.Like I said they can only really turn a profit if they fix your television at a fair price that you agree to.You are already out some money and the set is still not repaired.We can guess at what may be wrong with the unit,order some parts and still not get the unit fixed.Or you can spend 50 bucks more and know what the problem really is and make a solid decision.Use this thread to keep me up to date as to what you decide and what the shop tells you(should you decide to take it to them).I can let you know how much parts should cost and how long it should take to do the actual job. Hope this helps and please rate my information.


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Posted on Jan 02, 2017

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SOURCE: convergence problem

Part # STK392-040 X 2 Do not use generic-they won't hold up.
I use Panasonic brand with no recalls------wholesale cost about
30.00 each. Always replace both at same time = more efficient.
After replacement, alignment may be needed = let me know.

Please rate this solution...................T.

Posted on Nov 12, 2007

  • 8617 Answers

SOURCE: no blue convergance

need to replace the convergence ICs. If you need a link to get replacement ICs let me know.

Posted on Jun 07, 2008

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SOURCE: no blue manual convergence - Samsung pcj522r

Thats a very strong possibilty the phosphorus may be burned off the CRT face. Does the blue project when powerd up and looking in from the raer of the set? Look into the blue CRT lens while its playing If you can see a clear picture I would think that you have some open resistors in the blue circuit, If you cant see a picture its time for a CRT. If you need a CRT let me Know I have a good source for them Used.

Posted on Jun 21, 2008

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SOURCE: The Blue has developed an arc on the top and bottom

The KP51WS510 has the two STK392-560 ICs on the D board ( Brown Board laying flat on the left side) you will see the large heat sinks with the fins on it. The ICs are mounted to the heatsinks. In that model you will need to check the 6 Pico fuses right next to the heat sinks, and there are also 2 additional pico fuses on the G board ( where power cord plugs into) that will also need to be checked.

Posted on Jan 23, 2010

  • 3459 Answers

SOURCE: Sony KP-57WS500 convergence drift

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

Convergence problems are very common on all Projection TV sets including Sony,Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit wiith instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted or warped
  • No Audio/Video - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....
  • Dull looking picture
  • White looking picture
  • Halos around objects
  • Red/Orange looking picture

You can see some more examples and find a fix here

Posted on Apr 03, 2010

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