Question about Toshiba 43H71 43" Rear Projection Television

1 Answer

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

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,694 Answers

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

Posted on Aug 22, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 53 inch hitachi ultravision #53UDX10B Its out of focus and when you press the magic focus button it trys then pops up with the # 4 in the corner is this a convergence problem or what ?


Yes, you have a convergence failure. Usually requires replacement of 2 X STK ICs and any burnt resistors associated with the function that is faulty.

Look at the user menu and compare with images on our Convergence Gallery. Try to adjust in the convergence adjust menu. Identify the functions that do not work and make note. When you replace the ICs, pay special attention to the low ohm resistors for the non-working function. They will be located near the colored plug associated with the non-working function. If red vertical will not adjust, check resistors near the red plug.

There are many posts and websites that offer "new and improved Convergence IC substitutes. My advice is to use the original part numbers and replace any burnt resistors with original values. Many ICs purchased on the Internet are very poor quality and do not work. Many users get substitute replacement ICs and never get their TVs working again.

If you have other electronics repair experience, this job may be done with some chance of success. If you have no experience, there are many secondary problems that can and usually do appear. Determining how to fix the secondary faults and how to correctly align the TV is difficult without prior convergence repair experience.

Some of the common problems encountered are:
1. Poor solder techniques, resulting in damaged PC boards or poor solder connections.
2. Poor quality or wrong parts installed and recognizing this problem.
3. Resistors open or burnt. Some resistors are weakened by the initial faulty IC. Replacing with a "good" IC and starting the TV causes the weakened resistors to burn up. IC may be ok but there are one or more open resistors that measured ok when ICs were being replaced.
4. Wrong ICs used, causing resistors to burn up.
5. Resistors that measure normal and become faulty when heated by current flow.
6. Recognizing that convergence circuit is repaired correctly and alignment is needed.
7. Major alignment in service menu required because data is corrupted by multiple tries of magic focus or manual adjustment while faulty circuit conditions exist.
8. Major alignment required because user adjusted centering rings or physically changed mechanical focus adjustment, then mis-adjusted convergence settings trying to correct mechanical alignment faults.
9. User has not connected plugs and connectors correctly and caused secondary damage or mis-alignment trying to correct secondary issue.

Physically replacing the ICs may appear simple but recognizing if a fault still exists or if correct repair is required causes many attempts at repair to fail. Keep it simple. Replace with good quality original part numbers, measure suspect resistors and adjust only what is necessary.

There are only 3 things to fix, IC failure, resistor failure and user induced secondary faults. Data processor and memory is bulletproof.

easyab

Apr 22, 2010 | Hitachi 53UDX10B 53" Rear Projection...

2 Answers

The pic is off there is bowing at the top and


Picture becoming distorted at the top/bottom of the screen is due to the convergence circuit going bad, and is a common issue with big screen projection TVs.

The convergence circuits will need to be repaired, which will generally require some soldering and ordering new parts for ~$75. If you want to get a TV technician to repair it then you will probably be looking in the region of about $300 for a repair.

Here is a link to repair guide for a Mitsubishi TV. Obviously a different model, but the convergence circuits are generally the same for most makes/models - this will give you an idea of the work involved to fix it: http://www.techlore.com/article/22530/DIY-Repair-Replacing-Convergence-IC-s-on-a-Mitsubshi-TV-Set/

Nov 17, 2009 | Sony KP-57WS500 57" Rear Projection...

3 Answers

My LG rear projection TV RE40NZ60RB colour is ghosting with three colours separating. Colour converging does not rectify


There is a problem with the convergence circuit. It can be as simple as poor solder connections at the pins of the convergence IC or a defective IC. If you can solder, you can fix this yourself. Please confirm the model number of hte set and I'll provide the part numbers etc. required to resolve this.

Thanks,
Dan

Aug 20, 2009 | Projection Televisions

1 Answer

Hitachi 50" convergance amplifier problem fix


hi, which amplifiers??? audio or convergence ? repairing yourself means you are proficient at solder re-work and posess that equipment, I own a 9 year old Hitachi projo and wouldn`t trade it for any of the new formats, I can advise you where to get the ic`s once you tell me which circuit has actually failed, video-tek

Jun 05, 2009 | Hitachi 53UDX10B 53" Rear Projection...

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 http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm

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...

1 Answer

Zenith R49W36 Rear Projection TV Convergence IC problem


Had the same problem with my Zenith TV. Convergence was all out of whack. I purchased a repair Kit from www.TvRepairKits.com. The kit had all the parts and simple step by step photos of the repair. I cant thank them enough for making this possible . At first the repair did not work so I emailed them and within an hour they told me to check two other items. Sure enough they were right! The set is now working perfectly.
Thanks Guys, I will spread the word.
Louis

Jul 27, 2008 | Zenith R49W36 49" Rear Projection HDTV

1 Answer

Led flashing 3 times,


Please post the make and model as each has their own blink code. I can provide more detailed info once I know the make and model.

Thanks,
Dan

Jun 18, 2008 | Panasonic Projection Televisions

1 Answer

TOSHIBA TP55D80 REAR PROJECTION TV.


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 | Projection Televisions

1 Answer

Convergence problem


you probably won't find a new one but you could probably send yours in to be rebuilt if you don't want to attempt the repair. Google PTS Electronics for there info you can call for a quote, sometimes they even have them on the shelf and you can just return your old one. You'll pay more but less work.

Apr 25, 2007 | Hitachi 53SDX20B 53" Rear Projection...

Not finding what you are looking for?
Toshiba 43H71 43" Rear Projection Television Logo

Related Topics:

34 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

Dave Naylor
Dave Naylor

Level 3 Expert

834 Answers

The Knight
The Knight

Level 3 Expert

68368 Answers

Are you a Toshiba Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...