Question about Toshiba 43H70 43" Rear Projection Television

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I am getting ready to replace the 2 STK392-110 IC for a convergence problem on my Toshiba 43h70. Where would I locate these two ICs so that I can save time trying to find t

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Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.

If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is
http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.

I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.

You can also try
http://www.tvrepairkits.com/ , they do carry OEM or better parts.


I hope this information allows you to resolve this issue.
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Posted on Jan 30, 2010

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ArnelM
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SOURCE: I am getting ready to replace the 2 STK392-110 IC

on the signal board. you need soldering iron and lead. make sure you won't short the STK pins..good luck :) and also check pico fuses.

Posted on Dec 29, 2009

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I HAVE A TOSHIBA 43H70 I BOUGHT IN 2001 AND THE RED AND BLUE ARE OFF ON THE RIGHT SIDE. I HAVE TRIED TO USE THE CONVERGENCE BOARD TO STRAIGHTEN BUT MY RED WILLNOT MOVE TOWARD THE BLUE OR GREEN. ON NUMBER...


This tv the convergence board are dead.Any colors R,G,B mis alignment,don't matches any colors lines.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts are dead,must be replaced to solved convergence problems.The Shop will cost u $300-350 for parts and labors.

Jul 08, 2010 | Toshiba 43H70 43" Rear Projection...

1 Answer

I am getting ready to replace the 2 STK392-110 IC for a convergence problem on my Toshiba 43h70. Where would I locate these two ICs so that I can save time trying to find them.


on the signal board. you need soldering iron and lead. make sure you won't short the STK pins..good luck :) and also check pico fuses.

Dec 29, 2009 | Toshiba 43H70 43" Rear Projection...

1 Answer

My tv is showing a double picture in red


You have convergence problem in your tv . You need to replace convergence IC . YOu can get from the link below .

Convergence ICs

You need to replace both convergence ICs .It will cost you around $30 .
The IC number is STK392-110 .

Hope this helps .

Mar 03, 2009 | Apex Digital GB4308 43" Rear Projection...

1 Answer

CLASS HD Convergance ploblem


You need to replace STK ics which are convergence ICs in your tv

You can get from the link below


Click this link to get convergence IC

It will cost you $20-30 to buy these IC .

Jan 30, 2009 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Burnt resistors


Depending on where you bought the ICs you could have fried the new ICs when powering it up with burnt resistors as the green is controled by both ICs one IC controling the horizontal green Convergence and the other IC controling the vertical green convergence. Have you checked all the convergence resistors out of circuit?

May 18, 2008 | Panasonic PT-53TW53 53" Rear Projection...

3 Answers

My 43h70 Toshiba TV problems


Did you check the resistors that power the ICs ocasionally 1 or 2 of them will go open when the ICs go out. They are located right next to the ics. Remove one leg of the resistors out of circuit, you will no doubt find one or two that are open and need to be replaced.

Apr 15, 2008 | Toshiba 43H70 43" Rear Projection...

1 Answer

Toshiba 43H70


You need to replace both convergence ICs numbers STK392-110 . You can order replacements at this link I am enclosing. They provide free installation instructions and offer free on line instan messaging while youre doing the repair. I am one of thier Techs. This job takes about 45 minutes from start to finish. heres the link .
http://servicemanuals.vstore.ca/

Apr 13, 2008 | Toshiba 43H70 43" Rear Projection...

2 Answers

3D image


convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Jan 23, 2008 | Toshiba 43H70 43" Rear Projection...

1 Answer

Resetting convergence daily on Toshiba 43h70


Hi Mark, tough call without putting a scope to the circuit, either the convergence IC`s are going bad, signal from DCU is going bad (digital convergence unit), or possibly bad solder somewhere in the convergence circuit, I`m afraid your going to need a tv tech for that problem, BMW Rider

Jan 02, 2008 | Toshiba 43H70 43" Rear Projection...

1 Answer

43H70 Blue Convergence out of line and will not line back up


If the blue colors will not line up, and the blue appears to sag inward from one or more sides, then you can bet that one of your convergence IC's has either cracked loose or burned out. The IC should be resoldered or replaced and the convergence realigned by someone experienced with projection TV convergence circuits.

May 21, 2007 | Toshiba 43H70 43" Rear Projection...

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