Question about Hitachi 57TWX20B 57" Rear Projection Television

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Convergence repair cost

Hi, i'm a wife of an extremely proud tv watcher and his set has gone out. We got a diagnostic of the problem and was told the Convergence had gone out? I'm reading and seeing that the diagnostic is probably right as the set power's on, meaning the light comes on in the front, you see lights inside the set but the picture is black and there is no sound. I'm just curious as to what estimates for the cost of the repair are reasonable and realistic. We just don't want to be swindled. Thanks!!!

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  • Guy Trettevik Jun 29, 2008

    My tv is about 5 years old and working fine I turned it off came back 3 hours later and turned it on and the red light came on in frount and that was all no pitchure no sound. help!!



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This repair will be around $300 to 400.

Posted on Apr 04, 2008


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The screen looks 3d and is bowed in at top and bottom everyone told me to mess with the convertions or somthen like that

This is a bad IC more than likely and it is a common problem of CRT Rear Projection television sets. The easiest way to tell is by doing as your friends suggest and that is to attempt to adjust the CONVERGENCE in the menu settings. This is an 11 year old television set and I can't really remember where in the menu you find that but I think it's under "PICTURE."
Here's a quick explanation of what convergence means and what you are doing when you adjust these settings: your television set's display is controlled by the three individual colored projection "guns" with in red, blue and green, Convergence is exactly what it sounds like; converging the projection of the three guns perfectly so that they align perfectly on top of each other, basically synchronizing the three images so that they provide a perfect picture. Convergence can be off for a variety of reasons but the most common is caused from set being moved. You should always adjust your convergence settings after you move a set. Most convergence issues are minor where you notice a duplicate, shadow or "ghosting" of another color around the edge of the images on your display. Then there are at the extreme cases such as your where you get the extreme lack of convergence resulting in the "D" effect as you described.
Normally if it is just a convergence issue, even the most extreme cases with the 3D effect can be fixed by simply aligning the guns through the convergence controls on the user menu on the set but what you indicated about the bowing in indicates a much bigger problem. I'm assuming that it looks something like this:

Obviously not all sets are the same so your mileage may vary on exactly what it looks like but this the result of of the IC going bad and since your post indicates that you lack experience with TV repair, you'll have to have it done professionally and that's going to st you back at least $800. RP CRT's (and CRT's in general) are unfortunately archaic technology and repair shops don't sd a whole lot of work with it anymore. Also, again, this is an 11 year old RP CRT and this won't be the last thing to go bad on it.
Considering the age of the television and the cost to repair, it is far more cost effective to purchase a nice new HDTV. For the cost of fixing this set, you can get a Mitsubishi 60" DLP 1080p HDTV that's 3D ready even. Of course the price of LCD's and Plasmas have gone down dramatically as well so that may be an option for you as well. Do some internet searches. TigerDirect is good, NewEgg is as well and keep an eye out for online retailers who offer free shipping. Go to Reseller Ratings and sign up for their newsletter where they'll provide with links for the hottest deals of the day from all around the web and most often they include free shipping.
Good luck! I hope this answers your question.

Apr 22, 2011 | RCA P52926 52" Rear Projection Television

1 Answer

My tv has begun showing a red shadow behind the pictures as well as letters, i have gone into the converge settings to resolve but cant figure it out


When the convergence will not adjust after you know you have set them correctly using your TV's convergence adjustment, your convergence board went bad. You can either repair it yourself with kits sold online (links below) but unless you know how to solder very well, opt for a repair guy. Your model will cost between $350 and $450 if you hire someone.

If you like to tinker but not dwell into the soldering world, try finding the same model for free or dirt cheap on a web site like that still works but like where a kid jumped into the screen!, and swap out the board.

Good Luck! Please rate this answer if I was able to help.

Mar 27, 2011 | Panasonic PT-56WX53 53" Rear Projection...

2 Answers

I need to line up my colors and magic focus does not work.

If picture looks 3d in some way you have a convergence problem.

This set should use two of the STK-392-150 CHIPS FOR THIS.

The repair can be a do it yourself one if you have some skill. Magic focus only attempts to adjust at about 18 points on the screen.

Parts cost will be under 25 dollars. The repair consists of getting at the chips (2) and replacing both--on EBAY they will cost under 15 dollars (I fix sets and use a seller there).

If I can help make a comment here and if this told you something you did not know, rate this solution as very helpful as I do this here for free.




Sep 15, 2010 | Hitachi 51F500 51" Rear Projection...

1 Answer

ISamsung TV model # HC-P4363W

Check the tv out?If the tv have picture,colors R,G,B misalignment,picture have colors shadows,look like 3D pictures.The tv problems is it have a convergence problems.Very common on a DLP tvs.Very much repairables.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts,must replaced to solved convergence problems.The shop will cost u $300-350 for parts and labors.

Jul 17, 2010 | Samsung HC-P4363W 43 in. TV/DVD Combo

2 Answers

I have a red shadow in 3d on sony KP-46WT510 TV.

Ur convergence is dead.Problems:Are 3D colors,colors misaligns,and colors out of focus.Know how to solders?Must change 2 convergence ICS,and some or all the resistors.Tries Websites Tv repair, to buy a convergence kit to repair it ur self.The shop will cost u $300 for parts and labors.

Feb 17, 2010 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Double lettering on red when in 1080i good picture in 480p

This is a common problem. Your convergence has gone out.

Common symptoms are...

1) 3D Video
2) Warped Video
3) Convergence menu does not adjust the red or blue correctly.

Go here for a solution...

Sep 06, 2009 | Philips 55PP9401 55" Rear Projection...

1 Answer

Convergence Issue on Toshiba TN50X81 - Service Manual & Parts Source?

Replace the convergence IC's - P/N STK192-110 with part STK192-150 or 180. Then you can go back in and make the detailed convergence settings and get your picture back in alignement. Also check the flame-resistant resistors around the ICs to make sure that none of them have opened up.

Jan 11, 2009 | Toshiba TN50X81 50" Rear Projection...

1 Answer

Auto convergence issues

this is an indication of fl231 fusable link has blown.. a brown recatangular special fuse that blows due to poor solder connections on flyback. IF you can get the fuse and can solder this is not a difficult repair... EXtreme caution should be taken with televisions. this set can hold 380 volts even when unpluged.. rember resolder flyback

May 25, 2008 | RCA HD52W58 52" TV

1 Answer

Red Curvy Lines across top of screen (Unable to converge)

It sounds like a convergence problem to me also. The average cost to repair this TV is around $450.00-$500.00.

Call another service company that is factory authorized to service your TV. Also, try calling your manufacture and explaining your concerns and ask if will pay for repair or at least for the parts. Have model, serial numbers and purchase date at hand.

Feb 23, 2008 | Samsung HCL4715W 47" Rear Projection...

2 Answers

Power supply/convergence issue...

Your Projo is a complicated piece of equipment, involving 3 picture tubes (like 3 tv's), convergence failures are extremely common, I dont think $550 is totally unreasonable, but I dont think it is a power supply issue if it is just effecting 1 color, usually it would cost around $100 parts $300 labor to repair, might be a little high, I suppose they are also charging you for pickup and delivery, I hate taking sets into office as that sometimes jars stuff loose or cracks boards.

Jul 10, 2007 | Panasonic PT-47WX51 47" Rear Projection...

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