Question about Toshiba 55H70 55" Rear Projection Television

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Toshiba 55h70 Convergence IC

I am preparing to replace my convergence IC's on my Toshiba 55h70 Rear Projection TV, and I have read that there are alot of people out there that have done the same only to haveto make the same repair a few months later. I was wondering i used the stk392-180 rather than the stk392-110, would it be compatible with my tv and if it would add any longevity.

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I used the SONY stk180's on my 55h70 and works great...2 years no problem.

Get the real thing though....the knockoffs do fail

I also made sure the contact surfaces between the IC's and the heatsinks were properly cleaned and used "Arctic Silver Thermal Paste" applied in an even thin coat on all contact surface areas.

Posted on Apr 26, 2008

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The color is messed up. the color is all different colors like red,green and blue.


Your convergence is out of whack.

This can be caused by a failed convergence IC - or can be adjusted using the Convergence settings in the main menu.

May 15, 2011 | Toshiba 55H70 55" Rear Projection...

1 Answer

What causes the yellow and blue ghost on tv, and how to solve it. It is on a Toshiba rear projection


The problems ur tv have is known as a convergence problems,it dead.The tv colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures look like.The tv convergence board have dead 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced these parts on the tv convergence board to solved the tv picture convergence problems.The shop,will cost u $300-350 for parts and labors.

Oct 25, 2010 | Toshiba 55H70 55" Rear Projection...

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Convergence problem w/55h70. red is ok but can't fix blue. Is there a component or board that is easily replaced?


Yes,U have some basic machanicals skills?The Toshiba Tv convergence board,it call a Hyper board.Try website Ebay.com to buy a refurbish board.This board no longer produced by Toshiba,if can't find it.The Convergence 2 STK ICS,and some or all it resistors,must replaced manually.Must have tools,and knowing how to do basic soldering,to do this.

Apr 06, 2010 | Toshiba 55H70 55" Rear Projection...

2 Answers

I cannot adjust the convergence.


You have convergence output failure. The output ICs will need to be replaced and possibly a small component like a resistor or two as well. Expect to pay a service company $350-$450 to resolve this.

michtech

Jan 23, 2009 | Toshiba 55H70 55" Rear Projection...

1 Answer

Convvergence problem w/ Toshiba 50H82


You need to replace following ICs, may be 2 pieces in your tv for convergence problem.
IC, STK392-110T

Toshiba Part Number: 23135090X
Please search on net for availability in part stores

Sep 27, 2008 | Toshiba 50H82 50" Rear Projection...

1 Answer

Convergence


If the red isnt responding via the remote you will need to replace the STK392-110 Ics as the service menu adjustment will not correct it 100% due to the IC being faulty and the red and half the green is controlled by one IC and the blue and other half of green is controlled by the second IC so without changing both ICs the set will progressively get worse. Both ICs are stk392-110. You can get replacements at the following link along with instalation instructions
http://servicemanuals.vstore.ca/

Jul 13, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Parts for a Toshiba 55H70


I had the same problem. Different model same chassis. 1 convergence IC overheating was caused by red yoke. NLA at Toshiba. Fortunate customer had an extended warranty and got a new tv.

Jun 23, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Pic distorted slightly on left side. news (crawl) on bottom of screen angles down on left side, top of pic seems to angle up also. very minor problem but annoying anyway! pic clarity & color excellent.


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
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

Jan 29, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshba CF27E50/CF30E50/CF32E50


The convergence IC needed are STK 392-110 two of them and possibly a resistor or two If you don't know how to unsolder and solder I would suggest an honest repairman. most Parts distributors won't sell unless you have a business but you could try anyway. A volt-ohm meter is required "IF" a resistor needs to be checked or is burned. Convergence IC's are a common problem with all projection tv's. It may last another 5 years especially if you don't buy the generic ic's

Dec 30, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba 55H70 had convergence problem fixed that now vol.went out


check to make sure that the tv switch on the back panel for surround sound is not in the on position check the customer menu to make sure that the speakers are turned on

Sep 28, 2006 | Toshiba 55H70 55" Rear Projection...

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