Question about Toshiba 51H84 51" Rear Projection HDTV-Ready Television

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Toshiba TN55X81 One of my circuit boards is cracked, I need a new or functioning used one. does anyone know where I can get used parts for my TV?

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Re: Toshiba TN55X81

What's the model number, the TN55X81, or the 51H84?

Posted on Jul 24, 2007

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I have a TN55x81. the picture will just stop working (goes black). I will shut it off for about 5 minutes and then it will work fine. Some times for 2-3 days and other times just 10-15 minutes. Any ideas??

Intermittent problems on this type of TV are often because of cracked solder joints on the circuit board. They can be hard to see. When the TV gets warm, parts on the board expand and move by tiny amounts, sometimes with the right amount of expansion or vibration from the speakers, the broken solder joint looses connection and the unit shuts down. When things cool-off, the contact can be made again all by itself and everything fine until it happens again. Given the random nature of your problem, this is a suspected problem. Often it is the solder around the lead of a large component which is mounted to a heatsink.

Jan 22, 2011 | Toshiba TN55X81 55" Rear Projection...

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The video on ours keeps distorting by 'crunching in' from the sides randomly. Any thoughts??

Ur tv have a problem call convergence,it dead.The convergence board require 2 STK convergence ICS and some or all it resistors to be replaced to solved convergence problems.U know how to do soldering?Have soldering iron,tools and solders?Tries Websites like, to buy a convergence kit to repair it ur self.The shop will cost u $300-350 for parts and labors.

May 28, 2010 | Toshiba TN55X81 55" Rear Projection...

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My toshiba tn55x81 is getting lines in the screen. nothing major but the main problem is that it is losing its color focus after about 5 minutes of being on. i did adjust the color convergence and it did...

the prism is off balance or some bulb burning out, and you might need to replace parts. this would require a tv repairman, it is not an easy thing to do, looking at 200 to 400 repair.

Oct 17, 2009 | Toshiba TN55X81 55" Rear Projection...

1 Answer

How do I get into the tech convergance of my


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With the set on press MUTE on the remote.

Then press and HOLD mute for several seconds and while still holding it on the remote press Menu on the front of the set.

A (S) should appear in the upper right corner of the screen. (It means you are in the Service mode)

Press menu again on the front of the set

7 on the remote will call up the convergence grid

3 on the remote will change the color to adjust from red to green to blue(do not adjust GREEN)

You navigate the grid with 2, 4, 6, and 8 buttons.

To stop the cursor from blinking so you can adjust at any point use the 5 button—to move again use the 5 button.

When you finish you exit by hitting 7 on the remote again.

Sometimes you have to try a few times to get into the menu—I have had my problems but once in it is easy.

Let me know if this information was helpful and if you have ANY questions or need advice let me know.


Sep 25, 2009 | Toshiba TN55X81 55" Rear Projection...

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Toshiba TN55X Convergence problem.

You brought up an issue that we hadn't considered. Shortly after hooking up our TV to the receiver with a composite video, our convergence which wacko. My hubby replaced the 2 ICs, but now our power button just flashes red, with no picture. Not sure if new ICs are faulty or if it's another issue. He will replace old ICs to see if problem still exists with turning on the tube. And he'll try disconnecting the video signal to see if problem exists.

Ouch.. may have to consider another tv thanks to new technology ??????

Good luck solving your problem.

Jul 06, 2008 | Toshiba TN55X81 55" Rear Projection...

3 Answers

Toshiba TN55X81 Wont turn on but I hear clicking

Pull the three connectors to the yokes on the convergence board. If the set powers up, it's a good chance the STK392-110's need to be replaced. I fixed one today, and it has been running for 6 hours now.

Jun 15, 2008 | Toshiba TN55X81 55" Rear Projection...

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Toshiba TN55X81 screen shifted

horizonntal circuit seems not to be working

May 26, 2008 | Toshiba 51H84 51" Rear Projection...

1 Answer

Broken Mounting bracket Toshiba TN55X81

new braket hard to get on this model i loked all over i would use e poxy like u said should be fine

Feb 03, 2008 | Toshiba TN55X81 55" Rear Projection...

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TN55X81 Rear Projection color separation - convergence problem

You shouldn't need to do a board replacement, all you should need to do is manually tune the convergence.

You can do this with the built-in user tool, but there's also a far more powerful set of options in the service mode. To save you the trouble (I advise doing a LOT of reading before attempting any of this) here's a solid set of various tutorials based on what form of "separation" you have occurring:

Nov 21, 2007 | Toshiba 55H70 55" Rear Projection...

2 Answers

Cracked screen


My Toshiba TE55T11 also has a broken screen. I contacted the Toshiba hot line in Australia and they said that they don't make screens for this TV anymore. so i just got a new Toshiba 72CM9UA.

I hope this info is useful!

Oct 12, 2007 | Toshiba TE55T11 55" Rear Projection...

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