Question about Toshiba 43H71 43" Rear Projection Television

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Replacing IC's 1st, let me say thanks for the info. Now, as Im not a TV repair person, is replacing the "IC's" as simple as just purchasing new ones from an electronics store or online (using the info you provided) and then installing them (unscrew and screw-in or unplug and replug in) or is this something only a trained perfesional should do? Thanks again

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A trained tv tech or skilled hobbyist...moderately difficult soldering / de-soldering needed = no plug-in devices.........T.

Posted on Aug 22, 2008


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Tv has one line across the screen

Most likely the frame output stage has failed. Would need model details and circuit to tell you more, but given the age better to scrap it unless you know a reasonably priced repair person.It could be as simple as replacing a transistor or IC, but I cant see the repair being economic.

Jun 21, 2014 | Televison & Video


What to do when you have a cracked LCD, LED or Plasma TV

Spending a ton of money on a new TV is the norm these days. Unfortunately televisions are not made like they used to be. Flat panel LCD, LED and Plasma TVs are very fragile. The picture area can be cracked by even light objects hitting the TV.

Once the picture is cracked there is no way to repair it. It needs to be replaced. TV manufacturers purchase LCD, LED and Plasma screens in large quanities and get a great price. When your local repair shop has to purchase a single replacement unit, you will often find it is as expensive if not more expensive then a new TV (if its even avaliable) when you factor in the labor costs. Usually you are better off replacing the TV with a brand new set the next time a good sale comes up then have it repaired.

You would think the TV's warranty or extended warranty you purchased would cover a cracked screen. Alas.. they don't. Every warranty I have ever read does not cover accidental damage. As soon as the repair person sees the screen is cracked, they will tell you the warranty does not cover it and you are out of luck.

While there isn't much hope for repairing your current TV, you can take some simple steps to protect your new TV from damage.

1. Mount the TV on the wall. Its a lot harder for little kids to hit the TV or throw something at the TV when it is mounted on the wall vs sitting on a stand.

2. Explain to the family how fragile the TV is. While this might seem obvious.. kids do know things until they are taught.

3. Wear the wrist strap while playing video games as recommended!

4. Pickup a tv screen protector from a company like TV Armor. They are designed to provide impact protection for the TV without affecting the picture.

Following these simple steps can keep you enjoying your new TV for many years to come even if you do have a budding baseball player at home.

on Jan 07, 2010 | Televison & Video

2 Answers

We lost the sound on my daughter's Apex 1919. She was watching tv and heard a soft popping noise, and lost the sound. We rebooted, checked all the connections, and still no sound. Any suggestions?

The fault may be wither to its speaker or Output IC. Check the speaker first. If there are two of them, chek the seperately. If they are found alright, the audio Output IC has damaged and should be replaced with same type and number. To locate the audio output IC, you have to open your TV, and follow the wires that goes from speakers to main board. The position in which these wires go into, will be the audio card, and youcan see it there. In some sets, if it has burned out fully, card as it is should be replaced. OK.

Apr 12, 2011 | Apex Digital LD1919 19 in. LCD TV

1 Answer

HELP... I have a SY2551S color set (which has become a "member" of my family), today when I turned it on I got sound and a line across the middle. Does this mean the picture tube has blown? Can...


The problem is the result of a failure in the horizontal output or high voltage section. This means that respectively, either HOT/Convergence IC, or flyback transformer is defective.
The repair is done testing the flyback, then testing or replacing the convergence IC or transistor causing the problem.
The repair job will go above $150, and due to the age of TV I would say that it is better purchasing a new set.
The failure in fact cannot be repaired by the user. There are no part that can be replaced in an easy way. The repair must be done by a trained and experienced person, as it consists in testing at component level, then in doing some precision soldering/de-soldering to replace the parts involved.

I would say that this TV has done its job, and that rather to repairing the old set you would better buy a new TV.
I think that the best choice would be a new flat panel TV. An LCD TV consumes less than half the power needed by an older CRT like yours, and will repay the expense by itself over the years.
Other advantage of a flat panel TV is that there is no radiation emission. With any CRT TV, the beam hitting the display will release a little amount of radiowave emissions. The TVs are shielded, and the emission who is mostly filtered, is not considered dangerous.It is however better to reduce the exposure of human body to higher frequency radio-waves like those emitted by CRT.
In short. It is time to send the old CRT to retirement and to get a newer TV. A new flat panel will start at less than the repair price for this TV and will present different advantages.



Feb 17, 2011 | Zenith Televison & Video

1 Answer

The tv is an old philips tv but it plays sound the input on it is ext external im guessing but it plays sound fine but the picture will not come up


Is this the case when watching tv aswell as using an external device?

i assume this is an LCD TV?
It is a common fault for Philips TV's to have sound but no picture, this is an expensive repaire which should only be done by an experienced tv repair person as the main board will need replacing.
It may be worth weighing up the pro's and cons, it may be more beneficial to purchase a new set.

Thanks you for using Fixya.


Jan 24, 2011 | Video Game Consoles & Games

3 Answers

My 15 year old Toshiba Televisiononly shows a narrow horizontal band in the middle of the screen. Sound OK.

Hiii fairley,

You aren't specsificly dercribe yor tv set.
For common TV horizontal problem ;i.e : White line accross the horizontal screen, horizontal band,'s can solved by replacing the IC Vertical/Transistor, and olso to replace the cap nearest the IC.

For common TV Vertical Problem :i.e : White line at the center of the screen (top to bottom),Vertical band,etc...It's can cure by Replacing the Horizontal IC/Transistor,and offcurse the cap's.

Tha's what all I know....

Hope can help you to solved the problem.



Jun 22, 2009 | Toshiba 32A33 32" TV

1 Answer

Replace stk392 on panasonic tv

yes.u can easily replace the stk ic.but you should be perfect in soldering the ic.thats the main thing necessary in replacing the ic. to get the full instructions step by step with diagrams just click this link and follow

please do rate the solution . thanks.

Feb 09, 2009 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Magnavox 51MP392H/17

yes youre model will need two convergence ICs they are both STK392-120 and you will also need some 6.8 ohm resistors usually two or four resistors will need replacing as well. The site servicemanuals do have all the parts and they do provide free installation instructions with the ICs.

Sep 03, 2008 | Philips Magnavox 51MP392H Rear Projection...

2 Answers


I give you a site for do it your self repair..

Jul 07, 2008 | Vizio P2 42 in. HD-Ready Plasma Television

1 Answer


Robin, your convergence IC`s have failed, they are readily available but not an easy job for a non-tech, the board has to be removed from the tv and then the IC`s have to be un-soldered and new ones installed, this is not a real expensive repair but everyones description of "expensive" is different.At my shop this would cost approx. $265.00 out the door, Hope this gives you the info you need to make the decision, still have questions? ask away, BMW Rider

Dec 06, 2007 | Televison & Video

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