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Toshiba 55H70 lack of convergence, then no picture at all

Our TV lost convergence, i'e' multiple images, and could't correct. Now nothing come up and the red power button just flashes.

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Replace Both of your STKs they are your convergence ics they are big black ics have STK number on them if they are using 110s upgrde to 180s STK392-180 they are better ics. Call Electronix Parts 1-800-223-3205 they will have STKs.

Posted on Dec 24, 2008

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The picture on my Toshiba 55H70 is distorted. Most of the screen is fine, but the bottom left looks bent with all three colors misaligned. I tried adjusting the convergence some but it did nothing for that...


hello am rico, you need to replace your convergence ics (stk392 or 393 something esle). check for caps,fuses, resistors, cold solder in the boards. if you need more help, feel free to call at anytime. 602-810-7149.

Jan 07, 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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I have double images


Convergence is dead.U know how to solders? Replaced the 2 convergence ICs and some or all it resistors.Buy a convergence kit at Tv repair World.com,Tvrepairkits.com to fix it ur self.The shop will cost u $300 for parts and labors.

Feb 27, 2010 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba 55h70


sounds like the convergence ICs are defective and need to be replaced, they are STK392-110 you can get replacement ICs at the following link that include free instalation instructions.
http://servicemanuals.vstore.ca/

Jun 06, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

MY TV IS GVING A DOUBLE IMAGE


You need to replace the two Convergence ICs. Please post the model number of your set and I will post the IC numbers you need and post a link where you can order replacements and get free instalation instructions with pictures so you can do the reppair yourself.

May 03, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba 55h70 Convergence IC


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.

Mar 20, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Double imaging


The Toshiba 55H70 is a standard rear projection set. It does not have a "lamp", it has 3 picture tubes. When the colors suddenly do not line up on the screen, it means that one of your convergence output IC's has burned out and needs to be replaced. This is very common on those sets. If your set is using the STK392-110 IC's, it is probably a good idea to go ahead and replace both IC's with the newer upgraded STK392-150 IC's. The IC's should be replaced and the convergence circuits realigned by a qualified tech familiar with Toshiba projection sets.

Sep 11, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Bowing image top and bottom of screem


No im sorry there is nothing to do but replaceing the convergence IC

Oct 30, 2006 | 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...

1 Answer

TV pops and shuts off


Its two maybe three issues that your having trouble with. First thing is the convergence. That problem could be a cold solder connection on the convergence IC's or the Ic's have a thermal problem, as after they heat up they go bad. The second is the popping. This could be an issue with the rear channel Audio output Ic intermittanly shorting and shutting down the set, or it could be a bad ground around the picture tubes, or a leaky hi voltage block, or a second anode lead going to the picture tubes could be split. The other common problem with this set is the STR#### regulator IC in the power supply. Now unless your a tech you shouldnt attempt any of these repairs as there is very high voltage in this set and could cause great harm to you. seek the help of an authorized repair shop for Toshiba. Try this # if you cant find one in your area 800-457-7777 Good Luck

Jun 09, 2006 | Toshiba 55H70 55" Rear Projection...

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