Question about Toshiba 55H70 55" Rear Projection Television

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

Toshiba 55H70 I had a bad convergence problem and I fixed that and while I was in the service mode the vol. stoped working.please help.

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  • aj1416 Nov 16, 2007

    My Toshiba 55in sound was working one day and the next day nothing. Please help!!!!

  • silkybob Nov 25, 2007

    I didn't have a convergence problem, but the volume is muffled don't know what to do to fix it. Any ideas?



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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

Posted on Dec 09, 2006


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1 Answer

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 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...

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

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

Toshiba 55h70 turns self off

It sounds like your Convergence IC's have gone bad. This is a $300-$600 repair depending on where you live. I have recently changed them myself and it's not that hard if you have common sense and patience. If you do it yourself, you can do it for under $100.
The parts you need are 2 STK392-110 convergence amps and it's best to replace all 6 resistors that are related to the convergence amps as well.
Part numbers on the resistors are 24323129 and you can find then at

Mar 10, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba projection TV Flickers

You may have bad convergence chips in the set. I have worked on some with similar problems and replacing the convergence chips was the solution. Good luck and I hope this has helped.
NC Electronic
Mills, Wyoming

Feb 18, 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
Sony Convergence

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

1 Answer

Toshiba 55H81 Blue and Red Only

so you missing the green is is either a bad connection on the green crt or convergence amp ic bad
do this first
then if that doesnt fix it

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

1 Answer

Projection TV convergence problem

Get it fixed, because this is a simple repair. One of your convergence IC's has burned out and needs to be replaced. A good tech can fix the set in-house in about an hour and a half, and I charge $150 when I fix a set like that but shops in your area will vary so ask around. If you have a satellite receiver or a cable box, the changeover in 2009 should not affect you.

Sep 04, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba 55H70 convergence problem fixed but now gone

I just posted a question about a convergence problem( juice07 ). I am unable to adjust the red color in the convergence adjustment mode. Did you have a similar problem ?? Please help.

Sep 28, 2006 | Toshiba TP50H50 50" Rear Projection...

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