Question about Panasonic PT-56TW53 56" Rear Projection Television

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If you have already tryed to adjust it I mean What else is there to do except trouble shoot it for the bad parts that cause this problem? It has a convergence problem. If your not a tech NO you cannot or should not attempt to troubleshoot the set your self without the proper equipment or training, as you can cause alot more problems then you have now. I know its a hard thing as it is with my car or van when I have to lay out hundreds to fix it and im sayng "man only if i had the right tools as well as the right equipment to fix this stuff". BUT I DONT. So unless you have exstisive electronics training with TV troubleshooting, I would advise you to seek out help on this problem from a pro tech . Its not something to experiment with as Ive seen a grown man cry from the shock they recived from a TV set. BE carefull. God Luck

Posted on Jul 17, 2006

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What is convergence IC problem

Convergence has to do with how different colors are displayed on a screen or monitor - typically the rear projection and some other types. When colors are overlapping to create unexpected combinations, or leave gaps between areas where overlapping is expected that results in a shifted red, green or blue image strip or edge - that is an indication of a convergence issue. They can look like this in severe cases:


Colors will drift, so manufacturers often include a utility to help you nudge the colors back in the right place. Most times this utility is buried in the Set Up Menu and when activated, produces a screen like this:


You will need to adjust the red, green and blue colors for each cross so that only a white cross is displayed. Keep red, green and blue fringing to a minimum. When you're done, the screen should look black and white, symmetrical and straight - like this:


Problems arise when you are no longer able to coax the utility to give you these crisp, B&W results with no red, blue or green ghosting. This is often due to a failing convergence integrated circuit ("Convergence IC"). Many times, replacing it will solve the problem, but other times it can be the result of failing components either ahead or after this IC. If you're attempting to replace this IC, please make sure the TV or monitor has been *unplugged* for 24 hours or more to allow the dangerously high voltages to dissipate.

Sep 08, 2014 | Hitachi 50VS810 50" Rear Projection HDTV

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I have a blue streak, but whne blue lamp is removed so is the streak.How do you know id the convergence is broken

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Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as

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

May 28, 2011 | Hitachi Projection Televisions

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I own a Panasonic HDTV projection monitor PT-47WX42C I am having convergence/warping issues; There is a large green/red curve in the bottom rear of screen about 4 inches tall, and stretching over more...

Replace the convergence ICs they will be big black ICs and will have Part number on them example STK392-110
Mats Electronics has them for 9.95 each you will need 2 .

Sep 10, 2010 | Panasonic PT-47WX42 47" Rear Projection...

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I am getting a red tint around other red items on the screen especially on espn. I also see a green verticle streak.

Try adjusting the convergence. Go to the TV menu and select SETUP then CONVERGENCE. Select AUTOCONVERGENCE

Dec 29, 2009 | RCA HD52W56 52" Rear Projection HDTV

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My big screen panasonic tv has a double fuzzy picture what am I supposse to doto fix it

Adjust the convergence or reset it to factory default. Use only the remote when adjusting convergence. The front controls have no effect.
  1. Press action button to enter MENU.
  2. Navigate to SETUP.
  3. Scroll down to CONVERGE.
  4. Press VOL > to select.
  5. Press CH buttons to navigate up or down.
  7. Press VOL > to select.
  8. If CONVERGENCE ADJ is selected the align Green to Center screen will be displayed.
  9. Use the navigation buttons on the remote control to align the horizontal and vertical green lines on screen, with the cabinet reference marks on top center and left
    center of cabinet.
  10. Press ACTION button to display red center correction screen.
  11. Use the navigation buttons on the remote control to align the red cross with the white cross pattern at the center of the screen. To prevent picture tube damage do not leave test pattern on for an extended period of time.
  12. Press “0” on the remote control keypad to display the BLUE center correction screen, repeat procedure for adjusting blue. If needed press “0” again to return to RED correction screen. An adjusted cross pattern appears white with a minimum of color protrusion.
Remote Control must be in TV mode.
  1. Press ACTION button to display red correction screen.
  2. Press the 1 through 9 keypad buttons on the remote control to select the desired convergence position.
  3. Use the navigation buttons to align the RED cross with the white cross pattern.
  4. Press “0” on the remote control keypad to display the BLUE correction screen, then repeat procedure.
  5. To exit press ACTION button repeatedly, then press CH up.

Nov 07, 2009 | Panasonic PT-47WX53 47" Rear Projection...

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Philips 60PP9202 red shadow in the battom of the screen

This is a common problem. Your convergence has gone out.

Common symptoms are...

1) 3D Video
2) Warped Video
3) Convergence menu does not adjust the red or blue correctly.

Go here for a solution...

Sep 05, 2009 | Philips 60PP9202 60" Rear Projection...

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Convergence problem, I think

i think you need a tech .because all the users adjustment were tried.

May 28, 2009 | Hitachi 57F500 57" Rear Projection...

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Convergence problem

This is out of the service manual

don't forget to write the setting to rom by hitting the pip button twice

Good luck and don't hesitate to ask questions

2.12.5 Convergence point adjustment
Adjustment preparation
(1) Select color to adjust.
“STATUS” - Green
“0” - Red
“ANT” - Blue
(2) Use 4, 6, 2, and 5 to move the cursor position
(dotted lines).
(3) Use thumb stick to move the convergence point.
(4) Three adjustment modes are available:
1. (3x3) Press “STATUS” 5 times (only works
when DCU is in uncorrected state)
2. (7x5) Press “0” 5 times
3. (13x9) Press “ANT” 5 times
For touch-up, only the (13x9) mode is necessary.
This will adjust every cross-hatch intersection point
on the screen.
For complete adjustment, start with (3x3) mode. This
will adjust center point and eight edge points only,
but will greatly reduce adjustment time. Then use
(7x5) mode, and finally (13x9) mode to finish
If “S” distortion appears between cross-hatch lines
repeat (7x5) mode to change calculation process
while adjusting to remove distortion, then return to
(13x9) mode to finish touch-up convergence.
Adjustment procedure
(1) Receive any NTSC signal.
(2) Start adjustment at the center of the screen.
(3) Continue adjustment at next closest position.
(4) Adjust center area first, ending with edge sections.
(5) Press INFO button to perform calculation operation.
This process will take about 2 seconds and no
picture will be seen at this time.
(6) After interpolation, check convergence again and
repeat (1)-(5) if necessary.
(7) When convergence is acceptable, press PIP MODE
to write data to ROM memory. ROM WRITE? is
displayed to alarm system that ROM will be
overwritten with new data. Press the PIP MODE
button again to write displayed data to ROM.
(8) DATA WRITE TO ROM will take approximately 4
seconds and no picture will be displayed.
(9) Green dots will be displayed when operation is
(10) Press MUTE to return to convergence pattern, then
confirm again convergence is acceptable.
(11) Press PIP MODE (ROM WRITE) mode, then press
PIP CH to initialize sensor data positions.
Adjustment procedure
(12) Input any 1080I signal.
(13)Press EXIT key 5 times to exit video mode.
(14) Select an input with 1080i signal.
(15)Access menu and select ASPECT 5 mode.
(16)Press the SERVICE SW. ONLY button to enter to
DCU crosshatch signal.
(17)Repeat steps 2~11 above.
Notes: (1) Display only green for easier adjustment and
match to jig screen. Press “MENU”, THEN
(2) Perform interpolation and data write to ROM
after green adjustment. Once green has been
confirmed to match jig screen, the jig screen can
be removed. Do not readjust the green color
after jig screen has been removed. This is now
your reference color.
(3) Display green and red only and match red to
(4) Display all colors and match blue to green and
red. Touch-up red color if necessary.
(5) Existing DATA in ROM can be read by pressing
the SWAP button 2 times. This data can be used
after replacing a component (CRT, DY, etc.)
Where complete convergence adjustment is not
necessary, be careful not to overwrite this data.
DO NOT write cleared RAM data into ROM or a
complete convergence adjustment will be
necessary. Remember to try MAGIC FOCUS
before starting convergence adjustment to
minimize adjustment time.

Feb 01, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Convergence problem

You can download the manual here. Insrtuctions for auomatic convergence are described. I copied the instructions below.

Automatic Convergence
Your HD Monitor’s picture tubes might have been disturbed during delivery or
after you moved the HD Monitor, causing the color in your HD Monitor to be
out of alignment. The colors adjust by starting auto convergence.
IMPORTANT: Auto convergence works best once the HD Monitor has
warmed up for at least an hour. If you've just unpacked your HD Monitor,
it's a good idea to repeat the Auto convergence function when the
HD Monitor's been running for at least an hour. See page 38 for more
information about Auto convergence.
1. Press OK to begin auto convergence.
2. When the auto convergence is complete, the Red center convergence menu
appears. The cross in the middle of the screen should be yellow. If it is not,
use the arrow buttons to move the red cross to overlap the green cross.
Press OK when adjustments are complete.
3. The Blue center convergence menu appears with a cyan cross in the middle
of the screen. If it is not, use the arrow

Sep 23, 2008 | RCA R52WM24 52" HDTV Projection Television

1 Answer

Red line convergence problem on KP-57WS510

Yes replacing the ic's should solve it. It worth a try if you want to spend the money

Jun 02, 2008 | Sony KP-57WS510 57" Rear Projection HDTV

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