Tip & How-To about Televison & Video

How to replace a digital convergence box.

When your TV looks like 3D and you have already followed my instructions for replacing the convergence ICs at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics but the picture still looks bad, and you have checked all low ohm resistors in the convergence IC circuit, you need to replace the digital convergence box.

Sometimes the box can be hard to find and it may not always be near the convergence ICs. Generally the box is bright metal, vertically mounted to the mainboard. If you remove the side it will have a large flat pack IC with about 64 pins around the perimeter. Some units have the box soldered in while other manufacturers have theirs attached through a multipin clip. With the side removed you should be able to determine which way your unit is mounted and remove it properly.

The best source for replacement is http://www.encompass.com . They also will generally list the digital convergence box as such. Some chassis have the schematics located there also which makes identifying the part much easier. If the manual is not located there encompass has a very good research department. Click on the research request button and tell them you need to know the price and availability for the convergence box for the model tv you have. They should reply with a part number and cost.

Another source to find the part is http://www.shopjimmy.com . They do not always have units in stock.

Once the box is replaced you will need to enter the menu and set the convergence manually. This should be explained in your operation manual. If you do not have it you can get it at http://www.retrevo.com .


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1 Answer

Phillips hd projection tv/ model 60pp9363h/17

thats a common problem with all projection tvs. You will need to replace both convergence Ics and 4 resistors. You will need two STK392-120 Convergence ICs and four 6.8 ohm 1watt resistors. You can get replacement parts at the following link and they provide free instalation instructions so you can do the repair yourself. heres the link.

Sep 01, 2008 | Philips 46PP9302 46" Rear Projection...

1 Answer

Philips Rear Projection TV 43PP9202 Picture looks 3D

You need to replace both convergence ICs they are STK392-120 you will also need about four 6.8 ohm 1 watt resistors. You can get replacement ICs and resistors at the following link and they provide free instalation instructions with pictures. here is the link.

Jul 20, 2008 | Philips 43PP9202 43" Rear Projection...

1 Answer

samsung rear projection tv about 4 years old. Colours are mixed on the screen looks like a 3d effect.

need to replace the convergence ICs both of them , you can get replacement ICs at the following link and they include free installation instructions with pictures.

Jun 06, 2008 | Samsung Televison & Video

1 Answer

Looks like watching 3D movie(colors) and rounded

This is a convergence problem and is either bad connections on the convergence ICs or defective ICs. If you feel that you can solder, you should be able to repair this yourself. First try resoldering the pins on the convergence ICs. If that fails, replace the ICs. These ICs are large black ICs attached to a heatsink and should be marked STKxxx.
Keep us posted.

May 13, 2008 | Toshiba 57HDX82 57" Rear Projection HDTV

1 Answer

Philips 55PW9363 looks 3d

You need to replace both convergence ICs they are STK392-120 this is an easy repair that you can do yourself and save yourself around 400.00 for about 45 minutes work. You can order the new ICs at the following link and they provide free installation instructions with pictures and also free online support with a support tech while you do the repair. I am one of their support techs. You would also want to order at least 4 convergence resistors and they send the proper ones for your model as often a couple resistors go. Your model uses 6.8ohm 2watt 5% metal film resistors. So to recap you will need (2) STK392-120 Convergence ICs and (4) Convergence ICs . very inexspensive repair if you do it yourself. here is the link.

Apr 12, 2008 | Philips 55PW9363 55" Rear Projection...

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