Question about Zenith IQC50H95W 50" Rear Projection Television

6 Answers

Convergence The middle of the screen (from top to bottom) the convergence is fine. As you move to the left or right of center the convergence gets progressively worse. Any help? The projo setup on the customer menu has no effect.

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  • Pete Jenia Jul 19, 2006

    I changed the two convergence ic's and I have the same problem as before. I don't have a schematic for this product. Would anyone know the location of the fuseable resistors/part nos. or any other possible solution?

  • Pete Jenia Jul 19, 2006

    An added oddity to the situation is that I can use the convergence setup and get a good result with alignment. But, after you exit the menu and go to pix the convergence problem is there.

  • meltexas Feb 09, 2008

    I have the same problem with a PT5598Hdix Akai made by Samsung. I have replaced the convergance board with no effect. I can not adjust the convergance manually. I plan to replace the power def board but cannot find the correct part number.



    Mark Lynch melynch@suddenlink.net

  • beknbud Feb 10, 2008

    my tv looks blurry like you can see the picture but have double vision

  • Craig Wir Mar 04, 2008

    I have a Samsung HCM422W 42", The pefect focus does not work at all. I can manually correct the convergence but after turning the set off and back on the problem is back. For the most part the problem is with the red convergence and only on one side (the left). Some of the cross hatches are also rotated a bit, so those cannot be aligned using the manual mode. Any suggestions?

  • Lawrence Oravetz Jul 28, 2008

    Blue convergence in all 4 corners is way off. Cannot move up or down. Right and left ok

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6 Answers

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  • Master
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If the convergence adjustment is not moving the beam chances are the convergence IC(s) are defective. If you know how to solder and understand TV safety you may be able to fix it. With power disconnected remove the back. You should see two large heat sinks with large ICs (3 by 6 inches) with about 30 leads going through the circuit board. Numbers on the ICs should usually be something like STKxxx-xxx or some variation with x being a number. These ICs control the position of the three beams. If they go bad you can't adjust one or more beams. Replace them both as you don't want to get in there again in 3 months. Cost is not that much. http://www.tritronicsinc.com or http://www.partstore.com should have them at a reasonable price. Before replaceing the ICs look at the circuit board closly for cracked solder joints. Resoldering any bad joints might just solve your problems and avoid replacing the ICs. Good luck and remember safety.

Posted on Jul 12, 2006

  • Kim Yearick
    Kim Yearick Jul 19, 2006

    You did not say in your original post that the unit would perform a convergence but not hold it. Your problem is a different problem and I would have given you this answer if I had known previously that the convergence was working but not storing the settings. Obviously as you have changed the convergence ICs and the problem still exists it was not them. Your problem is the digital convergence box where the information is stored. It will be a large shiny metal box with a very large IC in it generally located on the signal board. Usually the circuit board or sometimes the entire box just plugs in to the board. Other times you have to unsolder the box from the board. If you go tohttp://www.servicemanuals.net you can get the service manual for $24.00 US. If you go tohttp://www.tristatemodule.com you should be able to get the convergence box. If they do not have it they can either fix yours or get one. Good luck and next time ask the correct question.

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You must press the add button to save the setting of a manual convergence

Posted on Jan 18, 2009

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I do have the schematics for the Apex GB5108 if you would like, email me and I will email them to you

Posted on Sep 30, 2006

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In most Projection TVs including mine, you have to press a specific key on remote or TV to save convergence settings. Simply exiting menu will not save the values you chose during adjustments. In case of Sharp 55R-WP4H it is preference D you press to save convergence settings. Please refer to user manual for your TV. This could be your problem.

Posted on Sep 17, 2006

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  • Master
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Theres two parts to the convergence IC's, as after all all they are ar analog stereo audio amplifiers. One or both of one sides of the ICs are bad and probaly blew the fuseable resistors along with the IC's. This is not a consumer repair. theres soldering i9nvolved as well as alighnment after the ICs are replaced. Not to mention the Hi Voltage inside these sets. Please refure this repair to an experienced repair person. Good Luck

Posted on Jul 12, 2006

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After adjusting convergence on Sony, I believe you press mute then enter to save the configuration or write to memory.

Posted on Mar 23, 2008

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Slinteriors
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SOURCE: Zenith converg.serv. menu code: G-Z Chas. with 9-1690

Try this proceedure it should work. Press and hold menu on the set. Then press vol Dn or up plus channel dn so all three buttons on set are pressed down on the set.

Posted on May 17, 2008

  • 1 Answer

SOURCE: 3d affect

at the bottom of the picture is moving up and the rest of the screen turning 3d

Posted on Sep 16, 2008

Slinteriors
  • 8617 Answers

SOURCE: how get auto convergence on RCA HD52W59YX38 to appear on screen

you can get the repair kit for your RCA at the following link. Its called the ITC222 and ITC222A convergence option missing repair kit, comes with detailed instructions. www.tvrepairworld.com

Posted on Sep 04, 2009

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You will need to replace your two convergence I.C.s.They are two large IC mounted on a large aluminum heat sink.Replace both,look for any burned resistors near them,replace those if needed,and readjust your convergence. Good Luck

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You have a hardware problem, you cannot fix it using the menu. in fact you could make it worse.

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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
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  • One or more colors can't be adjusted when using the convergence menu.
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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.

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