Question about Hitachi 43FWX20B 43" Rear Projection Television

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Hi; on my screen there are wavey red lines also the closed caption is double red&white. i have run magic focus, both auto & mannuel to no avail. please can you tell me what could be possibly wrong. my set is a 43fwx20b.

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  • Hitachi Master
  • 5,138 Answers

STK ICs Big black ICs will have PN# on them STK392-110s use 120s Mats Electronics has them 1-800-628-1118

Posted on Oct 05, 2010

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1 Answer

Blue and red wavey lines and distorted picture


Projection TV2_bing.gif sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV 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, Samsung2_bing.gif, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith2_bing.gif, and others. You can get a convergenece repair kit from the link below.

Common Symptoms include....
  • Screen looks 3D2_bing.gif
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on - TV may also make a chirping noise.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right.

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

Note: If you TV has as flash2_bing.gif focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution

93a1209.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

May 20, 2010 | Toshiba 53H71 53 in. Rear Projection...

3 Answers

White wavey lines with dots or speckles.


The "white line" at the top of the screen is usually associated with "VBI Information" - the stuff that carries closed captioning, etc. This is usually only visible on upconverted SD material on HD channels and is usually the fault of the affiliate not doing the upconversion properly.

Oct 20, 2008 | Televison & Video

2 Answers

Wavy colored lines of captioning at all times, can't turn off


Try first unplugging the power cord for fifteen or twenty minutes , see if this can reset and fix the problem.

Sep 11, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Blue outline on the top half of the picture on my Hitachi 51F500


your convergence ic is going bad. usually worth the repairl.

Jun 04, 2009 | Hitachi 51F500 51" Rear Projection...

1 Answer

Screen prob with Hitachi 51UWX20B red square


Maybe the best way to adjust the screen is with the manual magic focus..instead of letting the tv do the auto change it to manual and see if you can adjust the convergence yourself. I have this same model and once in the manual adjustment you want to make sure you see all white lines....if you seen any blue or red that is the color that needs to be moved towards the white line closest.

Once you think you have it lined up nicely hit "exit" on your remote and option 1....

Hope this helps you.

May 05, 2009 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

Words are doubled red borders???


Just to clarify, it sounds like what you are saying is that the image appears to duplicate in either red or blue along the edges of the image (especially white lettering and probably increasing along the boarder of the TV). This is resolved by converging your TV. Convergence will drift normally on large screen projection TV's over time or through moving them. The Hitachi 57f500a has a feature called "Magic Focus" (pg 36 in your manual) which will auto converge the image. If the auto converge feature doesn't work, on page 37 in your manual, it explains how to converge manually. If you do not have the manual, I have the image of the pages below. If for some reason this doesn't work, please provide additional info and detailed prior to rating the help.

Apr 20, 2009 | Hitachi 57F500 57" Rear Projection...

1 Answer

Double focused, red and green, bow in picture top and bottom


hi
You have a convergence problem
If the set has auto focus and will not complete its cycle.
The Auto focus module is bad, (expensive)
If it completes and the problem is still there.
Then check for bad conv. drivers (stk****) or cold solder joint on one or more of the 3 drivers pins.
Guy9

Jul 08, 2008 | Hitachi 65S700 65" Rear Projection HDTV

1 Answer

The red projection tube won't focus


Set needs convergence ic's changed and possibly a few small 1/4 watt resistors. Parts have to be desoldered/soldered into circuit board and test equip.(ohm/ volt meter) is required. Most repair shops do this repair for 175.00-375.00 Hope this was helpful. Russmann

May 21, 2008 | Hitachi Televison & Video

2 Answers

Red want focus


The fault can be on the convergence board, or in the HV multiplier.

Jerry G.

Apr 19, 2008 | Hitachi 51F500 51" Rear Projection...

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