Question about Da-Lite Tensioned Director Electrol 89986 Projector Screen

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How do you calibrate a rearprojection panasonic

Hhow do you calibrate a rearprojection panasonic cinema vision hdtv? On the edges of the tv the colors have diverged, is there a simple way to fix this?

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  • 3 more comments 
  • dj_cel Nov 20, 2009

    Hi thanks for the reply. The model is: pt-47wx53g.

  • dj_cel Nov 20, 2009

    Hi SD Tech, I would love the instructions and have used a soldering iron before :)

  • dj_cel Nov 20, 2009

    Wow that is incredibly thorough information, you are awesome! Thanks again!

  • dj_cel Nov 21, 2009

    I did have one question about the resistors, are they usually all 2.2, should I go to Frys and buy some of these to have on hand? I haven't taken the TV apart yet to see.

  • SD Tech
    SD Tech May 11, 2010

    A model number would help me answer you---if it is a rear projection set the model number will begin with PT- Let me know number and I will help you. it sounds like a convergence problem. sd tech



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OK, I know this set very well--if convergence in the customer menu is skewed and red or blue will not adjust in some direction, you have a convergence problem.


It requires that you are able to solder etc---not real hard even if you have never done it before.

Considering you can buy the parts on Ebay for about 20 dollars if you can do it yourself or know someone who can do it for you--you can save the set and a lot of money......most shops get 300 or more for this kind of trouble.

If you want the instructions let me know and I will post them.

I can tell you the best place to get the chips--this set uses two STK-392-110 CHIPS.

Usually just both chips need to be replaced and the set adjusted.

The instructions tell you everything you will need and how to do the fix.

I composed them from my own experience and because many people here ask the same thing you did.

If you have questions etc, let me know. I am here to help people.

If this has helped you, rate this solution as I do this here for free.

Thank you for using Fixya.


Posted on Nov 20, 2009

Testimonial: "Super fast responder, very helpful!"

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  • SD Tech
    SD Tech Nov 20, 2009




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    What you will need;

    Two new STK-392-110 convergence Ic’s


    Liquid solder flux

    Desoldering braid or wick

    A good soldering Iron

    Some denatured alcohol

    A small toothbrush

    A Philips screwdriver or screw gun to REMOVE SCREWS


    1. UNPLUG
      TV SET.

    2. Remove
      back cover of TV set.

    3. Remove
      entire front speaker grill on set(it pulls off and may resist being

    4. Locate
      and unplug speaker wires (they are plugged into the main circuit board).

    5. Locate
      three cables with wires that come from the Front keyboard—two of them have
      to be unplugged from the main board(all plugs are different sizes but note
      where they go)

    6. Remove
      2 long philips silver machine bolts from the front of the set (behind the

    7. Remove
      4 more in the back of the set; two
      are located at the extreme back edge of the plastic frame and hold the
      chassis down; two more are located on either side and also go straight
      down; note which are which and set them aside.

    8. Using
      gloves pull the entire metal box (it is called a light box) out of the
      set; there are hand holds on either side—careful as the metal has sharp

    9. Remove
      the box from the set and locate the two Convergence IC chips; they are
      located on identical metal heat sinks with fins and they should have the
      STK-392-110 number clearly printed on them in white (they are black)

    10. Turn
      the light box over on its side and UNSOLDER ALL 18 PINS ON EACH IC. It is
      a good idea to apply liquid solder flux to the pins on both chips now. I recommend using a de-soldering braid
      for this—get all the pins completely de-soldered.

    11. Inspect
      the dozen or so light blue resistors in front of them; most are marked 2.2
      ohms—if any are white in the middle you will need to replace them at the
      same time; best way is to check all of them like checking a fuse----they
      protect the set if one of the STK’s shorts in any way.

    12. With
      the STK’s completely unsoldered turn the box upright and remove the two
      screws on each IC. If the chips
      have never been replaced you will need to tap them loose with a putty
      knife or flat bladed screwdriver.

    13. Remove
      both IC’s.

    14. Apply
      heat sink grease to the two new IC’s and install them one at a time; this
      part can take some time and it is important the pins on the new IC’s are
      perfectly straight---once you get them in, Hand tighten both the screws on
      each IC---do not use a screw gun—you can strip the screw holes out. Clean the bottom of the circuit board
      where the chips were soldered with some denatured alcohol and apply liquid
      solder flux to all the pins.

    15. Presuming
      you have already found/replaced any bad resistors turn the box back over
      and solder carefully both of the two new IC’s in, --do not short any of
      the pins to each other when you do this and when you are done it is a good
      idea to take a close look at both to make sure all pins are soldered and
      not touching each other with soldering you have just done. I suggest you
      do clean the pins on the bottom of the circuit board again with denatured alcohol.

    16. Slide
      entire light box back into the cabinet.

    17. Reconnect
      the plugs you removed when you removed the box. At this point take a lens
      cloth or a paper towel with glass cleaner sprayed on it and clean the
      three large black lens-if they are dusty the picture will be darker and
      not as clear as is should.

    18. Position
      the box so it is all the way in place and none of the wires or plugs are

    19. I
      usually at this point turn the set on before I replace the Six bolts that
      hold it in—2 from the front and the four in back----this way if you have a
      problem you can remove the box faster.

    20. If the
      set comes on and now has normal Convergence go into the customer menu and
      adjust the convergence in the multi-point mode----CAREFUL! THE FIRST
      OPTION this set usually offers is a
      green cross in the middle of the screen—do not adjust Green!

    21. Once
      you have the Red and Blue in the center adjusted find the second
      convergence mode---it will give you 8 or nine points on the screen with
      instructions on how to change from blue to red---use the original remote
      with the thumb wheel or cursor buttons to adjust.

    22. NOTE:
      SOME of these sets need to have the Convergence adjusted in first:
      full/4:3 and second in the other two zoom/wide zoom and third on the HD
      input with a HD signal coming in.
      There is also an option at this point to go into the Technical menu
      and fine adjust the convergence all over the screen—if you need this I can
      give you instructions based on the model you have—most of the time
      adjusting the set in the customer mode will produce a good result.

    23. I know
      all this may seem complicated to you, but this repair should take about an
      hour or so and just take your time when you get to adjusting the set.

    24. If all
      looks good turn the set off and Unplug it; install all 6 of the chassis
      bolts back; replace the back cover and the Speaker grill and plug the set
      back in.

    25. You
      may find it useful to go over the convergence Adjust again—to get all the
      points as good as you can. There is
      a hidden Tech menu that will allow a finer adjustment of the entire
      screen----it is somewhat difficult to access and there are a lot of
      buttons on the remote that then do different things.

    Most of the time adjusting in the customer menu will
    give you a very acceptable picture.

  • SD Tech
    SD Tech Nov 20, 2009

    BEST place to get the chips is on Ebay (where I buy mine) select advanced search and then on the far left select search by seller: sewsales55 this is Suburban Electronics--you can buy either the 392-110 or if you want a slightly better chip order the STK-392-150.

    They also sell a few of the other items in the instructions--liquid solder flux and desolder braid.


  • SD Tech
    SD Tech Nov 20, 2009

    Do not forget if you have any questions or need help let me know.


  • SD Tech
    SD Tech Nov 21, 2009

    Look first--usually you only find one or two toasted--with a meter test them like a fuse--all the ones that are 2.2 ohm will read like a fuse--no reading and discolored and you need to replace them--use flameproof or metal oxide replacements---At the last shop I worked for they tossed lots of these sets and I salvaged dozens of the resistors from them.




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I'm getting a green / red separation on my screen now. Nothing I do seems to help. This a 2002 projection, HDTV 1080i, Cinema Vision unit.

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

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.


69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya

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



You can see some more examples and find a fix using this link on Fixya

Mar 06, 2011 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Where is the convergence board/ chip in my Panasonic cinema vision PT47WX51. And if i know how to solder, would it be hard to fix myself? I did find a website to buy one.

This is a common problem. Its called a convergence failure. You can get all the parts from

Your TV will commonly have one or more of the following symptoms:
  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted
  • No Audio or Video

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

Nov 13, 2010 | Panasonic PT-47WX51 47" Rear Projection...

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My Panasonic cinema vision projection tv has lost it's focus. It has "double vision". How can it be fixed?

You can get the Convergence repair kit for your model at the kit contains the IC, Resistors and the CD with step by step repair instructions.

Jul 18, 2010 | Panasonic PT-51HX41 51" Rear Projection...

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No green color in picture?

its a simple fix. just go to your menu in TV adjust the RGB color. balance the RGB settings.

May 26, 2009 | Panasonic PT-47WX53 47" Rear Projection...

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Panasonic PT-47WX53 does not turn on

Yes, I did try to use the power button on the TV itself. That did not work too. Yes, there is blinking red light too. I searched through several sights and found out that it is an issue with the IC 4511. I could not find a place to buy the chip.

By the way, our local TV dealer asked for $400 to fix this issue. I had already spent $400 on a different repair on this TV, 6 months ago.

Any suggestion/advice would be very helpful. Thank you again for your response.

Feb 18, 2008 | Panasonic PT-47WX53 47" Rear Projection...

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