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Hourglass effect (convergence bad on left and right side)










(Convergence bad on left and right side) If I hit TV ******* one side it gets OK-Advice I get on Internet long time ago. I had information how to replace some parts but I cannot find it anymore.



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Sounds like the classisc case of convergence amp ICs needing to be replaced. What is the model number of your set and I will post the STK numbers you need as well as a place to get replacements with free instalation instructions

Posted on May 12, 2008

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Blurry picture on left side double image right side is ok....


Ur convergence is dead,need convergence kit.
U know how to solder right?Tries these websites for convergence kit.Tv Repair World.com,Shopjimmy.com,Ebay.com or Partstore.com

Sep 25, 2009 | Zenith IQB50M90W 50" Rear Projection...

1 Answer

The tv has shadow of red and green about 10 inches in on both left and Right sides. Center is still ok?


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 | Zenith D52WLCD 52" Rear Projection...

2 Answers

Sony 53 inch projection screen with hourglass picture


If you are familiar with TV repair, have electronics basic knowledge, good soldering skills and tools then check dry (cold) soldering joints at D board of this TV. Resold all lose connections there and check picture.
Still no joy then you need to replace D board.

Feb 25, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Sony KP-53XBR45 convergence


Hey, found the problem. Your Convergence IC chip went bad. Buy one at Bluestar International Components (bluestar-online.com) - order part number STK392-010 for 6.99. I've read that there are two in the system and replacing them both at same time is a good idea...so, order 2. Now, if you are handy, it will require you to open the back of the TV and solder out the old chip and replace with new. If not, then you might as well call a TV repair person and have them fix. However, every place I've called works on a minimum fee for "large screen TVs" - the cheapest I could find in Atlanta was $399 minimum service fee. So, I'm going to risk the home sodering job .... it's a 10 year old TV and as good as it's been to me, if I screw it up, I feel I've gotten my money out of it. Good luck with your repair. My parts are on order.

Oct 15, 2008 | Sony KP-53XBR45 53" Rear Projection...

1 Answer

Red horizonal convergence tilts instead of adjusting evenly.


For your hitachi unit one of the convergence IC is bad along with couple of low value resistance on
the convrgence board.

Good luck
Dals123

Oct 09, 2008 | Hitachi 53FDX01B 53" Rear Projection...

2 Answers

Red sideways hourglass


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.

Jul 20, 2008 | Philips 60PW9363 60" Rear Projection...

1 Answer

Convergence problems


you need to replace both the convergence ICs they are STK392-120 you can get replacements with free instalation instructions with pictures so you can do the repair yourself. heres the link
http://servicemanuals.vstore.ca/

Jun 03, 2008 | Zenith R57W46 57" Rear Projection...

1 Answer

Hourglass effect and fuzzy


You have a convergence problem and I suggest to get a qualified honest tv repairman because this is a highly technical problem in this model. Hope this helps

Dec 30, 2007 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

Concave picture with rainbow effect at the edges


Hello, Check and replace IC1606 (P/N: 875292571) and IC1608 (P/N: 875982987). Best regards, Arpi http://www.partstore.com/sl/2/418644-ic-cxp86448635q-875292571.html

Apr 23, 2007 | Sony KP-57HW40 57" Rear Projection...

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