Question about GE 46GW947 46" Rear Projection Television

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Where is the convergance chip

Hi i need to find the location on the board of the convergance chip can some one help i thought i had theright one but it turned out to be a regulater

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Thats a ctc that doesn't have a convergence chip that model dont it uses a series of amplifier transistors and buffer transistors and you may have to buy a replacement board

Posted on Apr 23, 2008

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Will not power up has constant on off flicker , when I turn it on the green light clicks off and turns red and the cycle repeats. I have checked the fuses and also resolderd the power board. is there any...


Hi Eric,

First of all, thank you for contacting Fixya.com regarding on your TV problem.

I've suspected a convergence chips failure not the power supply board issue in this kind of symptoms. To confirm it, locate the convergence board inside the set, it has a Sanyo convergence chip STK392-110 that are mounted on the large heat sink. This board has a LED (light emitting diode) that will light up once the board gone to malfunction. Turn on the unit and then check if the LED will lit after the shuts down. If yes, then I would advice you to replaced both convergence Chips and check the resistance of the resistors in line with the +25V and -20V supply of the chips.
Let me know if the LED at the convergence board does not lit to continue our diagnosis... Check also the LED at the power supply board and on the deflection board(this is where the flyback transformer is located)

Have a nice day!

Goodluck and take care!

Kind Regards,

Jdvillanueva

Dec 03, 2011 | Pioneer PRO-99 TV

1 Answer

Hi, I have a Samsung HCM422W projection Televison and my convergance is not properly adjusting. It will not allow the red to fully adjust. Along with that it seems like the picture is kinda concave. Im...


MOST LIKELY, if convergence will not adjust in some part of the screen and or is bowed looking:

You need to locate the two convergence chips (usually STK-392-020 OR -040 THAT this set should use.

Most of these smaller Samsung sets they are located on a small circuit board mounted above the main boards--see photo of typical chip---should be two side by side.

If they are not located on that separate board, it will be much harder to remove/ replace them.

If the photo or this information helped you rate this solution as very helpful as I do this here for free.

SD TECH




6a9468d.jpg

THIS IS A TYPICAL CONVERGENCE CHIP--YOURS WILL HAVE A DIFFERENT NUMBER LIKE STK-392-040 OR -020.


TOTAL PARTS COST ON EBAY WOULD BE UNDER 20 DOLLARS.


Aug 16, 2010 | Samsung HCM422W 42" Rear Projection...

1 Answer

Where is the convergance Chip located in this television SOny Projection KP51WS510?


Hi,
Remove back cover of tv and on left side thee is D Board that has 2 big black ICs mounted on big aluminum heat sink, these are convergence chips in Sony KP-51WS510 tv.
Below is an exploded view taken from service manual and convergence out chips location is marked with red just to give you an idea.
Hope this info will help you.
Thanks.

a4ed77e.jpg


Jan 23, 2010 | Sony Televison & Video

1 Answer

Toshiba TP48C90 Convergence (replaced ICs, worked for 2 days)


Well, my thought is that there are a ton of knock off generic convergence IC's out there that usually hold up as long as yours did. Professionals like me will only use Sanyo original STK's. The counterfeit STK's out there are everywhere. Do some research on the web to locate Sanyo originals, they are out there.

Jun 11, 2009 | Toshiba Televison & Video

1 Answer

Convergence


I'm assume you are referring to a non adjustable convergence option. this will occur when you have a damaged convergence chip set that is located on either the PC board or the convergence board. The location of the affected chip will vary from model to model but, in most units, this can be fixed by replacing the convergence board or chip.

May 31, 2009 | RCA HD61W66 61" Projection HDTV

1 Answer

Lots of Blue shadows off to side. concaved picture almost


HI, this is a failed convergence chip that is located on the convergence board. it will need to be replace ASAP. you can just replace the chip or , you can order a new board.

Replacing the chip can be a rough job if you don't have tech experience. if you are a fluid tech and you can solder and know your way around a circuit board, just replacing the chip will cost less. if you are not an experienced TV tech, i recommend a service call to the nearest TV tech to replace the convergence board.

May 20, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

BLUE ON THE MAGIC FOUSCE WILL NOT LINE UP


HI, normally when this occurs, this will signal a malfunctioning convergence chip that is located o the convergence board. this convergence board controls the calibration attempts when syncing the RGB streams.

Simply replacing the convergence board or chip will fix this issue.


May 15, 2009 | Hitachi Televison & Video

1 Answer

Location of the convergence circuit board inside the KP46WT510


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. 

Jan 29, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

3 Answers

Convergence chips


The convergence IC or in a sense ,amplifiers and the resistor are output resistors... if they are burning up the current going through them is spiking too high... TO me this is an indication that the "convegence yokes" are shorted. These are coils around the tubes that control convergence. I would suspect maybe that these are shorted to ground somehow. This is my first guess for this problem

Feb 11, 2008 | JVC AV-48WP30 48" Rear Projection...

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