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

2 Answers

Blue bulb emits light, but no picture.

Hello,

I've had my 55PW9363 Phillips TV for about 3 years now, and for the past 6 months the picture has been horrible.

I decided today to take the front cover off and clean it, as the mirror and lens' all had a thick layer of dust on them.

After a good thorough cleaning, I think I discovered why the picture has never looked right.

There is no picture coming out of the blue tube. Just blue light.
The red is crystal clear, the green has some spotting under the lens, and the blue is just blue light that changes brightness along with the other tubes.
When I mess around with the focus on the blue bulb, I can see what appears to be shadows moving around, but again... no focused picture what so ever.

I'm fairly confident repairing the TV myself, but I know nothing of TVs. I don't know what parts affect what, what parts to ask for, etc.

Any help is greatly appreciated,
Jonathan
jonboy545@gmail.com

Posted by on

  • 1 more comment 
  • jonboy545 Jan 21, 2008

    Wow, thanks for the quick turnaround!

    Yes, the Green tube does look like there is something "growing" on the inside surface, but they are large spots.

    The blue most be "congealed" as there is no picture left what so ever. Just blue light with some barely distinguished shadows.

    If you could post a link to how to change the coolant that would be wonderful! I tried the first link above, but appears the thread is no longer there.

    What is this coolant? Not automotive coolant I assume Ethelyn Glycol?

    Instructions would be wonderful. I have the blue complete lens/bulb/ray gun assembly out of the TV at the moment.

  • jonboy545 Jan 21, 2008

    I read those links...

    http://www.avsforum.com/avs-vb/showthrea...

    This link I get the following error:

    No Thread specified. The post or the thread may have been moved into the archive.



    Please try clicking
    HERE
    to read the archived posts or threads prior to 2005.





    Or HERE

    document.getElementById("archive-link").href
    = location.toString().replace(/www/, "archive");


    document.getElementById("archive-link2").href
    = location.toString().replace(/www/, "archive2");

    to read the archived posts or threads between 01/05 - 06/06.








    If not found it was more than likely removed. If you need further help, please notify the administrator.


    _____________________________________________________

    I did find a PDF but I guess I can't make heads or tails of the CRT assmebly to see where the coolant is. Know of any diagrams?

  • jonboy545 Jan 22, 2008

    Hey, calm down there buddy!

    I don't know how to use this site... didn't know the ratings were on a "per user' basis... I just clicked on the first rating I saw...

    I gave you the rating too man. I apologize... calm down...

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2 Answers

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  • Philips Master
  • 8,617 Answers

Phillips have been known for the coolant to get contaminated especially in the blue CRT. it congeals and your picture will become hazy and out of focus.This is something you an do yourself. If youre careful. If you would like instructions on how to do this proceedure. Let me know.

Posted on Jan 21, 2008

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  • Master
  • 4,402 Answers

A few tests to do:

In the user menu turn the Color level to zero. You should see a nice B&W picture, shades of gray only, no red grn or blu tinting.

Take the screen assembly off and look down into the blu tube (Tv On). Do you see any cloudy fluid or stuff growing on the inside surfaces of the blu tube?

thats a classic problem of bad fluid
Changing the coolant in the blue crt fixed my problem.
http://www.avsforum.com/avs-vb/archive/index.php/t-690782.html

Posted on Jan 21, 2008

  • Cary Farah
    Cary Farah Jan 21, 2008

    http://www.avsforum.com/avs-vb/archive/i...
    http://www.avsforum.com/avs-vb/showthrea...

  • Cary Farah
    Cary Farah Jan 22, 2008

    well i found the problem and what it was would appreciate a fixya solution give credit where credit is due!

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