Question about Samsung HCL473W 47" Rear Projection Television

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Green & Blue Ghosting Convergance problem

After fixing the convergance problem (replacing the STK's & the pico's) still having problems, Perfect focus does not work, blue & green ghosting (looks like they are out of focus). Even after going into Convergance Mode (MUTE-1-8-3) the lines were way off, used a jig to get it all back in order then saved the new info. But the fix is not holding, the lines are still moving and Perfect Focus still not working. Then went into Service Mode (MUTE-1-8-2-PWD) looked at all the Factory settings, they were off.
This TV was serviced about 4 years ago by a Service Tech and he replaced the SUB board. I did not own this tv at the time of repair.

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  • pbandero Jun 02, 2009

    I just finished checking out the tubes to see how the coolant looks, I found a fly in the green tube. Yes a fly.

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Odds are real good that the cooling fluid in the green and blue picture tube assemblies has become contaminated. You can tell by looking down into the lenses with a flash light. Funny thing is the red never gets contaminated because whatever organism is causing the problem can't survive in red light. BTW this may still not solve all of your convergence problems but when the colors are so badly diffused the convergence sensors for flash focus can't lock onto the beam landing.

Posted on Jun 02, 2009

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1 Answer

Will bad convergance ic's keep my Mitsubishi


If one of the two stk-392-570 chips has shorted it will blow a pico fuse on middle board and set will not come on.

Plug set in, turn on, when green power light goes out on the front of the set press and hold both the menu and input (device) buttons for at least five seconds and release both.

Power light will blink a two digit error code: if 2,2 it is a blown pico fuse and the chips also must be replaced. I have start to finish step by step instructions that are available if the customer selects me to answer in the new Marketplace here on Fixya.

see attached photo of chip and also part of middle board with the green pico fuses.


10_4_2011_6_08_57_pm.jpg


10_4_2011_6_09_50_pm.jpg


10_4_2011_6_10_21_pm.jpgchips look like this but will have 570 number on them.

SD TECH

Oct 04, 2011 | Mitsubishi Televison & Video

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.

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1 Answer

WS55511Mitsubishi TV convergance problem


Your TV most likely has a problem in the convergence circuits. ( 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.

May 22, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Is there a manual convergance on 53udx10b


Do not adjust any knobs as instucted in the previous thread if you TV have a convergence problem. Doing so will only make things worse. The blog does however show you how to fix other common problems with these sets.

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.

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Sony kp-57ws510 convergenece prblem


You didnt replace the STK's? You must replace the convergance IC's or you will continue to have this problem.

Sep 18, 2008 | Sony KP-57WS510 57" Rear Projection HDTV

2 Answers

Convergence problem


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2 Answers

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I am also having the same problem. I tried to replace ICs but no luck. I am also looking for service manual in case if some one can give it to me.

Thanks,
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1 Answer

Lost Picture


Sound like problem in convergance circuit - Replaced them with STK-392-570 and replaced the bad pico fuses


AAPCO Electronics
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1 Answer

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I would take a look at the entire circuit board the STK chips are sitting on... I have the same problem with a sony KP-57wv700 and it turned out to be the high voltage controller for the crts got fried... part # BA9759F and it can not be replaced as the entire circuitry around it got toasted also... I just ordered entire circuit board. mine was the D board in this case...

BTW, did you check or replace the pico fuses? 3 orange ones on each STK circuitry. Check their resistance with an ohm gage should show continuity. My case they were 3.15 A each...

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1 Answer

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http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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