Question about Sony Grand WEGA KDF-42WE655 42" Rear Projection HDTV

1 Answer

Triple color on screen

Three color donot match . the screen look like defective conversion. This problem require mechanism adjust or service mode adjust or must replace complete of the Engine light unit

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  • lsoare Feb 16, 2009

    Cleaned all mirrors in ushaped light tunnel. Now colors do not line up there must be a way to align by ajust ment. Help.. I can disasemble and reasemble with my eyes closed. lol

  • Joe1974 May 11, 2010

    Sounds like a convergence problem. I can't really give you a definite answer without a picture of the problem. I can tell you that the site that Jean posted will not fix this
    problem and could even make things worse. That site pertains to a specific problem that is common in
    some Sony sets and should not be used to try to fix any other issue.







    Please keep in mind many things can go wrong with TV
    sets and you should really do a lot of research before attempting any
    adjustment and or repair. There are high voltages present in some areas and they can
    reside even when the set is unplugged.

  • ladywinn
    ladywinn May 11, 2010

    IS YOUR TV DLP/LCD or Projection has 3 TUBES R/G/B?

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  • 29 Answers

Http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html



Go to this Blog. It "should " solve the problem.
Really, Really simple, do it your self solution !!
Instructions and pictures included :D

This blog covers many makes and models with many issues solved, just with that one solution
Give it a try, it's free and simple :D


Hope the blog helps you.

Jean

Posted on Mar 12, 2009

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Posted on Jan 02, 2017

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I have a toshiba tv model tp50g90 I have replaced the convergence chips stk392-110 convergence was corrected but I have a problem yet red not managed to focus on the user menu in the option of...


Thats the way it works. You have to adjust the other colors to the red. You adjust the red from the back of the set using the convergence magnets on the tubes. Then you adjust the other colors to match the red. It's much easier if you have the plastic screen from Toshiba used to align this set.

Feb 20, 2011 | Toshiba TP50G90 50" Rear Projection...

2 Answers

Our colors are not matching up. When we do the automatic conversion, the green is not in alignment with the other colors. Can we save our tv?


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.
You can get a repair kit with parts and instructions from www.TvRepairKits.com

Sep 23, 2010 | JVC AV-65WP74 Rear Projection Television

2 Answers

Seeing triple red,blue,green


you have proble with the convergences ICs if the tree colors are at fault then also check your power supply voltages the polarization resistors

Feb 08, 2009 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

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
convergence.
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
completed.
(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
PRESS “STATUS”.
(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
green.
(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...

3 Answers

No color adjustment


51f500_51_in_rear_projection_hdtv_190581.jpg

Problem with Hitachi 51F500 51 in. Rear Projection HDTV-Ready Television
i want to learn how to do convergence on my tv its a hitachi rear projection i have problums with colors not aligning,could you lead me in the right direction ps: i don't have the remote so i

can't magic focus

Posted by avatar13.jpgejaparks on Mar 03, 2011

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Solutions (1)

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.
Here is an example photo.... louis66_0.jpg

Jul 04, 2008 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Projection defect


Good Day;
It sounds like you may need to re-adjust your G-2 controls, located at front, remove front panels. Look for small block with screen /focus controls on item, first turn color down, reset brightness, contrast controls. Adjust until lines are at min. and picture is a good black and white (grays). Good Luck, big IRISH.

May 21, 2008 | Panasonic PT-52LCX65 44" HDTV

2 Answers

Triple picture and purple bubble on big screen


Your TV most likely has one of two 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.
701cb04.jpg
77ea520.jpg
f0900cb.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 directions your convergence 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 www.TvRepairKits.com. 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.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


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

Sep 25, 2007 | Sony KP-48S70 48" Rear Projection...

1 Answer

Colors won't stay set


NOTE: Manual Convergence settings ARE LOST if the customer returns to AUTO Magic Focus mode. (More Details) this situation is normal. Bottom line: This is caused by two issues, The Centering is off of any or all CRTs. (Don't forget Red and Blue Offset values). The Horizontal Size needs to be changed by increasing H. Size by 20mm. Readjust the Horizontal Size to the NEW specifications. These are different that the original Service Manual. They have been increased by 20mm on 51", 57" and by 25mm on the 65". Before replacing DCUs, Please CHECK and confirm if any of the three color center alignments are off and readjust the Horizontal Size to the New specifications.. TO CHECK. Clear DCU data by holding down the DCAM "Service Only Switch" and then POWER. Make sure the Green is centered. Make sure the Red and Blue is offset from center with respective offset value according to the SM information. Readjust the Horizontal Size to the NEW specifications. These are different that the original Service Manual. They have been increased by 20mm on the 51" and the 57" and on the 65" it's increased by 25mm. There IS NO NEED to replace DCUs. The DCUs are not defective...All that is needed is to confirm the Centering Adjustment for the three colors and adjust the Horizontal Size to the NEW specifications. Adjust if any color is found to be out of adjustment specifications. If you don't understand this then you need live chat!

Sep 11, 2007 | Hitachi 43F300 43" Rear Projection...

1 Answer

Color Fading


check your menu settings if not there then you may require board level service.or eprom sub menu adjustment.

Dec 02, 2006 | Panasonic PT-47WX42 47" Rear Projection...

5 Answers

Conversion problem


Has it been moved latley? is there any auto align mode? i know the lenses can bounce inside there during a move and it can throw off the focus. If there is no kind of auto align it may need serviced. Usualy they have to come out and realign it using special tools. The tools display a cross on the screen in each color and they adjust the throw of the guns that refocus all the colors to the center till it becomes one solid color. The panel drops down from the fron and you adjust the pots with a plastic tool that realigns the guns. There may be a mode in the settings to display the image you use for the alignment. This is a common thing and i think they recomend it be setup at the home and not moved after its setup.

Apr 04, 2006 | RCA P46812BL 46" Rear Projection...

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