Question about Sony KP-46WT510 46" Rear Projection HDTV

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Convergence board revisited

Ok here's what I have. The convergence went out. As per previous suggestions I've obtained the 2 convergence chips. I've removed the board and decided to check the fuses (PS8001 to PS8006) and chip power supply resistors (R8122 and 8127). PS8003 is open and I'll replace it. However, the two resistors on the board are jumperwires and not resistors. The board has the R #s correct and shows a resistor yet there are jumpers in this location (0 ohms). Do I leave this as is since it worked for 3 years or replace with resistors? If so do they need to be higher wattage power resistors? And since the fuse 8003 was bad should I still replace the convergence chips or put the board back in and give it a try after replacing the fuse? Any help would be appreciated. Thanks.

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No leave the jumpers in and yes replace the chips as that's why the fuse blew so it would not take out the power supply when they shorted. I hope you did get the right IC's, the ones that say Sanyo on them. If you did not, these replacement IC's you purchased are the factory rejects and may work for a short time, but not for long. Also do not forget to apply an ample amount of heat sink compound on the backs of the new IC's before you install them. Good Luck

Posted on Sep 01, 2007

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1 Answer

Replaced Convergence chips, same problem


This set has pico fuses on convergence board and also on G power board, there should be 2 5 amp pico fuses on power board.

If convergence is bad exactly as before double check the power board fuses and check to see if voltage (it is marked!) is there with power board disconnected from chassis..

Steve
3_1_2012_5_47_54_pm.jpg

Mar 01, 2012 | Sony KP-61HS30 TV

2 Answers

I have a Samsung HCM4715W and it will not turn on. The remote turns on the tv but ther is no picture or sound. There is a red light on the front that flashes. I counted the flashes and it's 22211.


Go to Encompass Parts Distrubtion for List of Parts and Prices to your TV type in Model number.
You need to replace either the convergence board or Both ICs on convergence board they are big black ICs STK392-020s Mats has them 1-800-628-1118
Covergence board# AA95-02002A

Mar 22, 2010 | Samsung HLR5667W 56" Rear Projection HDTV

1 Answer

Where are the convergence chips located on my 60PP9202 for the red


There are 2 Convergence Chips: 1 for Horizontal (it includes Red, Green and Blue Convergence channels) and 1 for Vertical (it includes Red, Green and Blue Convergence channels). Horizontal Convergence Chip is 7044 and Vertical convergence Chip is 7045 (both STK392-120). They are fixed in same "big" Heat Sink, with a 2 metal black clips, from Video Inputs board side.

Oct 19, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Convergence is off in the lower right and upper left corner


The repair isn't too complicated if you're comfortable working with a soldering iron. Sounds like one of the "guns" is shot. The chips that need replacing are attached to the heatsink on the convergence board. The reason for replacing both chips is if you're going to bother to take the board out and replace one bad chip, that is the best time to replace the other older chip. The link below is to step by step instructions including pictures of the repair. You can check it out to see if you want to try it. If not, the repair is expensive (between 250-400) depending on the repairman. Best of luck with your convergence problem.
Greg

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

May 23, 2009 | Toshiba 50A61 50" Rear Projection...

1 Answer

Zenith R60v26 has burnt resistor at RK5 on convergence board


Hello, I have the exact same issue with my R49W36, I replaced the convergence chips but there are also two 1 ohm resistors with the same color pattern as yours that are bad. I have looked all over and cannot find a 1 ohm resistor anywhere. Where did you find it?

Dec 31, 2008 | Zenith R60V26 60" Rear Projection...

1 Answer

I have a convergence problem. My Sony KP-65WS510 has a picture that looks like 3-D and bows at the bottom and top of the screen. I already replaced both the IC's STK 392-560 (2 qty.) and check all six 3.5a...


You have a convergence problem. Here are some of the most common symptoms. 
Screen looks 3D
One or more colors can't be adjusted when using the convergence menu. 
Screen is bowed in but stationary.

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. 

>>>Solution<<<< 

You need to replace the convergence chips and convergence resistors. 

Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. 


Dec 09, 2008 | Sony KP-57WS510 57" Rear Projection HDTV

2 Answers

CONVERGENCE BOARD PROBLEM?


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
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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.

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.

Nov 06, 2008 | Hitachi FDX Series 43FDX10B 43" Rear...

3 Answers

Samsung HCN4727W


Convergence board shot. Cheap to fix yourself, board has two STK chips on it and is easy to get to.

May 16, 2008 | Samsung HCN4727W 47" Rear Projection...

7 Answers

HC-P4752W - IC Replacement vs Convergence Module.


The colors weren't lining up correctly on my HC-P4752W which is only about 30 months old. I did a little bit of research and got ahold of the people at http://servicemanuals.vstore.ca/ They recommended replacing the IC's as well as the IC resistors. I purchased the replacement parts from their site and made the repairs myself. I should mention that I didn't have any previous soldering experience. The repair was easy and a complete success. You may find replacement parts elsewhere for slightly cheaper but what you won't find is the prompt and detailed customer service that they provide. They gave me there # and said to call if I had any questions before or during repair. I took advantage of their services and got answers every time I called.

Aug 11, 2007 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Update and a few questions (Convergence Problems - VS-55601 55 in Projection)


yes, they go bad interment because they have a large current go thru them and they generate heat, they are mounted on a heat sink with white silicone to help disapate heat. replace both not just one, try MCM Electronics get heat sink compound also

Oct 06, 2006 | Mitsubishi VS-55601 55" Rear Projection...

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