Question about Projection Televisions

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Convergence - Projection Televisions

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  • jclebrija Jul 13, 2008

    I have a Sony KP-43HT20 with what appears to be a convergence and PIN problem. The unit's TIMER/STAND BY indicator light blinks four times when the unit is turned on (self diagnosis) indicating "Vertical deflection stopped". After reading several blogs online a convergence problem sounded like the problem. Not owning the correct equipment to replace the STK392-560 chips I purchased the complete D Board. After replacing it, the problem persists. Flash focus doesn't help and the adjustment by remote commander, as described in the service manual, is not responding (I can't get the marker to move). What else can I try?

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4 Answers

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Dear Sir,

ic8002 and ic8001 are the two convergence drive ic's located onthe left board they will be close to the back and two huge heat sinkswill be right in front of you, you can't see the printing on the ic'sfrom the back because they are pointed away from you. Remove that leftboard and you will beable to see the ic's better, make note on wherethe pluggs go, there are three plugs all the way closest to you lookingfrom the back, these three plugs can be plugged in wrong so make sureyou know which plug each one came out of. there will also be someboard screws you will need to take out and some jumper type ofconnector between the boards they flip up. The yellow fuses you needto look for are located right under the fins of the heat sink, you needto use your ohm meter and check to make sure they show shorted.

click this link for manual for more information

http://www.tradebit.com/filedetail.php/3070877-Documents-eBooks-Technical


Thanks
Good luck


"Don't forget to rate the solution"

Posted on Jul 20, 2008

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This convergence IC issue is hitting a lot of older CRT-RPTVs (all manufacturers since similar ICs are used). There could be issues with the ICs, the resistors, cracked solder on the board, or all of these. The parts can be purchased for under $100 for DIY'ers. The repair done by a pro is typically $3-400. Once repaired, a proper manual convergence is usually necessary and the TV looks like new again.

If you replace only the ICs and there is a problem with the resistors, the ICs may blow again almost immediately, so while the board is out, replace the appropriate resistors - if you buy the "kits" everything will be supplied. You should also check the board for cracked solder. Since the ICs are relatively inexpensive, you should always replace both (or however many there are) ICs when doing the repair.

If you've done the repair and something doesn't work correctly and you've tried everything else, try unplugging the TV overnight. This has resolved issues for 1-2 people.

Here are the instructions for how to do a DCAM convergence. You don't have to open the TV to do it. This is a different mode than the service menu. These instructions are mostly from the service manual with some added comments from a poster on the avs forum.

Manual Convergence for the Hitachi
1) Receive an NTSC signal.
2) Press Magic Focus to begin magic focus
3) Press magic focus again during the magic focus process to get the "stop" screen
4) While stop screen is up, press STATUS or INFO on the remote control (R/C) to bring you to DCAM mode and
the service grid
5) When you first get in here? I believe red is the selected color by default (it is flashing).
6) To choose other colors to converge, use the following buttons on the R/C:
a) "STATUS" - Green
b) "0" - Red
c) "ANT" - Blue
7) Start from the center of the screen and work your way out on one color at a time. I adjusted red across the
whole screen to match green. Then I switched to blue, and adjusted that to green as well. After you adjust blue, you
may want to go back and adjust some red again? etc. until the convergence looks good.
(a) Use 4, 6, 2, and 5 on the R/C to move the cursor position(dotted lines).
(b) Use thumb stick to move the convergence point color.
** There have been other posts in here to tape together the color filters found in the Avia DVD to help converge
lines more easily. I have used this method, and it works well for adjusting to a greater detail. Basically, you put the
red filter next to the green and adjust your red to the green line both horizontally, and then vertically. Then you do
the same with the blue next to the green. Some people recommended you should be at normal viewing distance. I
did mine from just a few feet back from the set. Maybe my eyes aren?t as good? maybe I just felt like it worked
better this way. There are some other posts also recommending using binoculars. I think it?s great that people
suggest things to make the process easier? but my girlfriend would think I was insane if she saw me with
binoculars on the couch adjusting the convergence. I don?t know? whatever works best I guess.
8 ) I did not adjust the green at all. I use the green as the guide and did not adjust the location of any green point.
This is highly suggested unless you have geometry problems.
9) When going along the lines and adjusting, you may run into the problem of getting an "S" curve on the line.
You?ll know if you get there. Basically, no matter what you do to adjust the line to be converged, the middle of the
line between the points will not straighten out (it bends between the points). To fix this, the manual recommends
going to the (7x5) mode which gives you less points to adjust. I had this problem, and the solution worked. There is
also another mode (3x3) which gives you even less points. Basically, if the set looks good, you only fine tune it in
(13x9) mode. If you have serious problems, the grids work as:
3x3 - "coarse"
7x5 - "medium"
13x9 - "fine"
10) To get to each of these patterns use the following on the R/C: (only if you need to)
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

Note: The grid size doesn't change, but the cursor "skips" a line.

11) If you adjust the 3x3, then you should go to the 7x5, and then the 13x9. You get the point? depending on where
you start, work your way up, and always finish on the 13x9
12) When finishing up the 13x9 mode, to get additional ?grids? on the edges of the screen, press the PIP CH button
on the remote control while in the digital convergence adjustment mode (DCAM). Fine tune the edge convergence
as necessary. To exit, press PIP CH again.
13) 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.
14) DATA WRITE TO ROM will take approximately 4 seconds and no picture will be displayed.
15) Green dots will be displayed when operation is completed.
WARNING: YOU MUST DO THE FOLLOWING STEPS TO COMPLETE MAGIC FOCUS
INITIALIZATION!!! THERE HAVE BEEN MANY POSTS THAT PEOPLE HAVE HAD PROBLEMS
WITHOUT DOING THIS STEP BECAUSE THEY LOOSE MAGIC FOCUS!
16) Press MUTE to return to convergence pattern, then confirm again convergence is acceptable.
17) Press PIP MODE and then PIP CH to initialize Magic Focus. The initialize operation starts and several
windows appear during this operation. It takes about 30 seconds or less.
18 ) When green dots appear, initialize operation is finished.
19) Turn power OFF.
21) Wait a few seconds. Turn the TV on, and you should have your normal signal. Press Magic Focus button just
to make sure the magic focus still works (and that you did the last few steps properly)

Posted on Jul 13, 2008

  • LORETO LACARON
    LORETO LACARON Jul 13, 2008



    this are the links to guide you with step by step directions and diagrams

    http://www.repairfaq.org/sam/tvfaq.htm#t...

    or

    http://home.earthlink.net/~oleg.filippov...

    or

    http://cmpalmer.blogspot.com/2006/11/fix...

    or

    www.tv.manulsonline.com

    PLEASE DO NOT FORGET TO RATE THE SOLUTION AS FIXYA IF HELPED BY IT.THANK U FOR USING FIXYA.



  • LORETO LACARON
    LORETO LACARON Jul 13, 2008

    To see the
    diagnostic screen, Press the following buttons:
    Display, Channel, 5, Vol Minus, ( Not plus ) then Power. This brings up
    a screen with a list of the problems and number of times they have occurred.
    Each of the problem names is abbreviated as, "OCP", "OVP", "V STOP", ETC.
    We have repeated them in parentheses in the text for the "Blinks" described
    above so you can correlate between the diagnostic screen and the blink
    codes.
    So, now that you know about these self-diagnostics, how do you use them?
    Say that you have a set with a black screen. You see that the LED is blinking
    4 times....This would tell you that you have no vertical and that is why the
    video is muted. If it was blinking 6 times, you would know that you have a
    horizontal fault.
    It's not a sure cure, but it's a little better..
    IMPORTANT:
    after you repair the unit, PLEASE clear the values on this diagnostic
    screen. These codes do not reset themselves after the fault is 0
    corrected, so if you don't clear them, you'll be seeing "old" fault
    codes the
    next time you enter this screen. Clearing is done by going
    into the service mode ( display, channel, 5, volume plus, then power )
    then press 8 and Enter, which of course returns
    everything to the factory preset condition.

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Hi,

If you would be so kind to post back the make and model, a more appropriate response could be forwarded.

Additionally, there has been numerous postings of similar concerns that may be used as reference.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 12, 2008

  • Louie  Role
    Louie Role Jul 13, 2008

    Hi again,

    Appreciate your reply/postback and additional information. Rather than add, may I point out the solution of VOTIT as your first option.

    Cheers.


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Can you explain the problem in a little more detail please? also make and model of the tv.
Thanks,
Lee

Posted on Jul 12, 2008

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Related Questions:

2 Answers

Picture not in focus


Devices: All projection TV's (HD or analog), especially Samsung

If its a Samsung HCN653W (or similar model), the first thing to try is the menu option named "Magic Focus", which tunes the set's focus.

Otherwise, it sounds like a job for a convergence. Perform a convergence procedure on your TV, and if the problem recurs within a few days/weeks, then your TV's 'convergence amplifier' board (aka "convergence amp board") is starting to fail.
This board may fail completely, in which case, your convergence procedure will fail to improve the picture.
A "convergence procedure" can be performed entirely by just using the appropriate setup menu option and your remote control.
This board may partially fail, in which case your convergence procedure will properly converge the Red, Blue, Green colors on just part of the screen, whereas a properly functioning convergence amp board will allow complete convergence of the colors across the entire screen.
Your TV's convergence procedure instructions will be found in your TV's Owners Manual.
At least one Projection TV manufacturer recommends that the consumer perform a convergence procedure every 30 days, but most TV owners find that excessive, and might only do one when (a) there's an evident color convergence problem in any part of the picture, or (b) once every 3-6 months.

How-to video: www.youtube.com/watch?v=esk4nYZKFcg
how-to instructions: www.ehow.com/how_2034880_perform-convergence--tv.html


cost to you: $zero
.

If the convergence amp board is bad, cost for a service call would be $300 (USD) plus $100 for a new board plus 50% markup on parts = about $450 (USD)
Cost to order a new board online: about $100 (USD) + shipping + sales tax.
Alternatively, if you can solder/desolder STK's (Power Amplifier Integrated Circuits), one can repair a convergence amp board for as little as $30 (USD) or so.

Dec 04, 2011 | Sony Projection Televisions

3 Answers

How do I adjust the convergence?


3_24_2012_6_00_06_am.jpg This is a common problem on many brands of Projection Tv sets. Its usually a convergence issue. You can get more details and a solution here on fixya using this link http://www.fixya.com/support/r11932741-convergence_repair_dull_video_repair

Feb 03, 2011 | Panasonic PT-51G36 51" Rear Projection...

1 Answer

Convergence issues


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.

3dc9420.jpg
645fba6.jpg
0dcec37.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.

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 20, 2009 | Mitsubishi WS48511 48" Rear Projection...

1 Answer

Picture color ghosting


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.

3dc9420.jpg
645fba6.jpg
0dcec37.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.

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 20, 2009 | Toshiba 50HX70 50" Rear Projection...

1 Answer

Convergence problem--blue lines won't line up


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.

3dc9420.jpg
645fba6.jpg
0dcec37.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.

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 19, 2009 | Mitsubishi WS-65809 65" Rear Projection...

2 Answers

I have a sony Projection TV KP46WT510 convergence issue. How can I fix it? I see fusy picture with red and bleu double picture. I tried the convergence fix in manual and it shows the issue but could not...


Your TV most likely 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.

3dc9420.jpg
645fba6.jpg
0dcec37.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.

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 13, 2009 | Sony KP-51WS500 51" Rear Projection...

2 Answers

Need to know what convergence chips are in Panasonic PT51HX41E


your model has two STK392-110 CONvergence Cs, you will also most likely need at least a few of the 2.2 ohm 2watt convergence resistors. I am posting a link to the actualrepair kit for your model which contains both Convergence ICs and all 6 of the convergence resistors and they send instructions with pictures that show how to do the repair.
http://servicemanuals.vstore.ca/product_info.php/pName/panasonic-projection-tv-convergence-repair-kit-1/cName/convergence-repair-kits

May 28, 2009 | Projection Televisions

1 Answer

Manual Convergence


your convergence ICs have failed. You can get the convergence repair kit for your model at the following link which contains both convergence ICs and all of the feed resistors, plus the kit contains step by step instructions with pictures on how to do the repair.
http://servicemanuals.vstore.ca/product_info.php/pName/phillips-dptv-305-dptv345-convergence-repair-kit/cName/convergence-repair-kits

Feb 01, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Convergence problem


your model has two boards that control convergence. One is the convergence board. the other is the convergence board power supply, usually when more than one color is off its the Convergence power supply that is bad. You can get replacement circuit boards at the following link.
http://servicemanuals.vstore.ca/

Jul 19, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

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...

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