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Convergence adjustment out of range - Panasonic Projection Televisions

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  • jw1pilgrim Jul 02, 2008

    My red convergence seems to be out of range and will not move

    M# PT47WX54J S# LY41700120

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  • Panasonic Master
  • 8,617 Answers

Please respond to this same post with your model number and I will be able to post the part number for your Convergence ICs and where to get them.

Posted on Jul 01, 2008

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GREEN CRT OUT OF FOCUS


The individual lens have a lug nut that when loosened allows the lens to be turned-----cover red and blue lens and call up the convergence grid---from the rear adjust that lens until the green lines are in good focus(can also do the red in and the blue if needed)


You will get no more advantage as the manual focus controls on the splitter block have very limited range.


when done carefully tighten the wing nuts on the lens back tight.

Dec 05, 2012 | Mitsubishi WS-65807 65" Rear Projection...

1 Answer

Tried to auto adjust the guns, will not come within range


Hi Tod,

If colors do not align correctly, most likely you have a convergence failure. This requires replacement of the 2 STK ICs and possibly some low ohm resistors.

Some Toshiba have a Horizontal oscillator/Drive IC failure that results in a small or shrunk picture (2-3" border on all sides). The 3 colors do not align properly because of the reduced Hor drive signal. The convergence adjust controls will work but not allow good adjustment. Convergence is ok, Hor Drive signal is incorrect.

Many do-it-yourselfers mistake the Hor Drive problem in Toshiba RPTV with convergence failure. Too much adjustment of the convergence controls may cause the saved data to be really messed up and require more difficult alignment in the service mode.

If minor or simple adjustments in the customer convergence adjust menu do not fix your problem, there is a fault. Stop adjusting until fault is repaired

Convergence failure can be accurately identified with the Convergence Gallery on our website. Service in Toronto, Ottawa, Calgary, Edmonton and other Canada cities.

easyab

Apr 21, 2010 | Toshiba 42H81 42" Rear Projection...

2 Answers

Picture has double images around the edges of the viewing area.


Firstly check for correct colour registration at centre of screen. Look for coloured halo around white edges in centre area of picture. Use static convergence adjustment if necessary to correct centre of screen. Then follows an involved process of interactive adjustments to attempt correction of errors at the screen extremities. If these are out of adjustment range this is indicitive of a convergence drive fault requiring professional intervention.
I hope this information is helpful!

Jan 01, 2010 | Hitachi Projection Televisions

1 Answer

It looks like my convergance is off. I keep


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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. This is called convergence.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with 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 - TV Shuts down - May also make a constant chirping sound

Problem #2
Another common problem is dull or washed out video.

Your set 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 herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Dec 29, 2009 | Mitsubishi WD-52525 52" Rear Projection...

1 Answer

The images on my TW40X81 have a RED halo on their left side (viewers right side) I have done the electronic convergence but the red will not adjust left, to the "Merge" cross hairs. it will move right,up...


If Red will not move far enough you have one of three things wrong----if the two convergence chips have never been replaced--they are Q751 & Q752 and are black in color---

About 2 1/2 inches wide X 1 1/2 inches tall and mounted side (ON LARGE METAL HEAT SINKS WITH FINS) and they will have the STK-392-110 PRINTED ON THEM IN WHITE.

Either one of them is bad, or one of the 1.8 ohm resistors around them is damaged and off value OR you have a problem in the digital convergence unit--it stores and controls all the convergence adjustments.

I suspect based on your description one of the two chips damaged one of the protect resistors---

You can if you are able to do the repair yourself buy a pair of the chips on Ebay for about 12 dollars plus shipping--I do this for a living and have repaired hundreds of sets with convergence problems.

Let me know if you have questions or need advice--I am here to help people.

If this information helped you, rate this solution as I do this here for FREE.

SD TECH

Nov 20, 2009 | Toshiba TW40X81 40" Rear Projection...

2 Answers

Convergance Issue...


You can call in a shop or do it yourself. Average repair bill from a shop will range between 300 - 600. Average DIY cost will be 70.00

Your TV most likely has a convergence 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.
Here are some photos of convergence problems.

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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.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Jun 21, 2009 | JVC AV-56WP30 56" Rear Projection...

1 Answer

Center Target Blue Convergence and Contrast Adjustment


Yes there is a Service Code you have to have to get into Alinement menu and its a Dog following step by step to get in! (1) Turn set on cable (2) Turn sleep timer on 30 min (3) Press Action Twice exit menu 4) now tune to ch 124 (5) adjust vol half way down (6) Now Press vol- on front of TV ,now you should see a RED chk appear in upper corner (7) Now Power on remote hand unit and you shiuld be in menu Press cursor to move Mute locks where you want to aline ADJUST with vol-,Vol+ ch- ch+ for up&down back and forth.If you need anymore help let me know .

Press R-tune to change R-G-B

Dec 25, 2008 | Panasonic PT-53WX42 53" Rear Projection...

1 Answer

Convergence Problem and Contrast Adjustment


Have you checked all of the resistors inthe convergence circuit as well? If not, check them for the correct impedance.. Remember, you have to pull one side of the resistor out of circuit to measure it correctly. 
If all of the resistors are good, then you have to do a coarse convergence adjustment on the set through the service menu.. if you need the service manual for the convergence directions, I have one uploaded in the technicians corner of techlore.com



Dec 25, 2008 | Projection Televisions

2 Answers

Red convergence out of range.


Replace STK393-570 convergence IC. located on center PCB.
re-check alignment........T.

Oct 24, 2007 | Mitsubishi WT-42311 42" Rear Projection...

1 Answer

Picture seems to be slightly zoomed


you convergence and sensors are out of range ,for proper adjustment of the auto focus,eprom settings might be off also ,find a service manual and adjust and save settings to eprom ic's/

Aug 25, 2007 | Hitachi 43FDX15B 43" Rear Projection...

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