Hitachi 51SWX20B 51" Rear Projection Television Logo

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Kevin Heffelman Posted on Oct 26, 2006
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Pulsating Picture My 51swx20b is 3 years old. The picture is pulsating on the left and right of the screen. If you turn on the convergence screen, you can see the convergence lines moving in and out, sometimes slowly and other times rapidly. The colors are aligned on the grid. Any ideas? Thanks, Kevin

1 Answer

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  • Posted on Oct 26, 2006
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Joined: Aug 31, 2006
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Your set might have loose conections ,a few places to check is the horizontal driver transformer and the convergence IC's,they develop loose conections and need to be resoldered,if you are familiar with tv service and soldering is something you could do ,some conectors might get disconected when you flip the board,but if you are not too familiar I would suggest you call for assistance from a servicer.Besides the places I mentioned I am sure the set has other overheated places that need resoldered as well.Let Us know how it goes.

  • Anonymous Oct 26, 2006

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0helpful
1answer

There is a red shadow on the picture, mostly on the left hand side, and the picture is a bit blurry

Projection sets have two very common problems.

The first common problem is convergence


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
0helpful
1answer

Distorted picture

You have a convergence problem.On this model you can change the convergence amp board which has the convergence IC's on it making it an easy repair.
1helpful
1answer

Picture "pulsates", becomes small and fuzzy

Ur convergence is dead.Need to buy the convergence kit use it parts.U know how to solder right?Tries these websites Ebay.com,Tv Repair World.com,or Shopjimmy.com.
0helpful
1answer
0helpful
1answer

Pulsating screen.

Due to the flourescent lights that are used in this product, i would suggest trying to return the product for a new one, as one or maybe a few of the bulbs may have busted or become loose due to the impact caused by the fall.
0helpful
1answer

Tv on no picture no sound tv making a pulsating humming noise.

Hi phalbeis, Unfortunately it looks like the power supply has failed, since the unit is new I would check into the return policy of the store you bought it from, if your lucky you can just exchange it. If not it will have to be shipped back to the manufacturer.which can be a hassle, you may have to pay the shipping to the repair facility.
Let me know how it goes and please rate this solution. Lone99star

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee

0helpful
1answer

Old Projection telvision on the fritz

you need to change the CONVERGENCE ICs , if you cant do it then it needs to be serviced by a HITACHI authorize service shop , hope this helps AJ
7helpful
2answers

Hitachi 51SWX20B Convergence problem

Solution:

Your TV has a convergence problem. Here are some of the most common symptoms.

Screen looks 3D
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed in or warped.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence or magic focus section.

Try to adjust the convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

Its a fairly easy fix on the Hitachi sets.

You can get a repair kit that includes all the parts from www.TvRepairKits.com. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc.
Everything you need to fix it yourself.
0helpful
1answer

Pulsating power LED. No picture. No sound

Either the main smoothing capacitor or the voltage regulator are faulty. You may find that the power LED will stay on after pulsating for several minutes, at which time you can switch the TV on.
0helpful
1answer

Picture Pulsating

I have the same set. I solved this by turning off the dynamic contrast or adjusting the contrast and brightness settings down.
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