Question about Hitachi 55FX48B 55" Rear Projection Television

1 Answer

Alignment of the 3 lenses on my hitachi 55fx48b

My tv was working fine no problems then this morning i powerd it up and the darn thing was like 3d i tried the convergince button on the front panal on the hitachi 55in and to no avail it shows 8 + signs plus a box in the center now i can line up the colors somewhat good across the center left to right but because of the top drooping down in the center and bowing up from the bottom in the center i cant seem to get it all straight. what do i need to do to bring the top center up from bowing down and push the bottom down to align it all up. this is very frustrating and if its not an ez fix is it going to be expensive to repair it was new in 1999. i like it alot.

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  • ken man Sep 17, 2006

    Thank you techman for your explaination however i was hopeing for alittle more detail as to what parts are needed seems the blue lens is actualy the biggest problem however they all are not correct in ther alignment but the blue is the worst when doing the convergince the red screen lets me move up,down,left,right no problem but just not far enough to help and the blue screen lets me move left,right,down,but not up and the crosshairs of the blue are thick on top and thin on the sides i dont no what eles i need to tell you to make it easy to pinpoint my exact problem so i can order the parts and have it repaired. if i have to order from u and have u repair it for me so be it im game. sorry for asking for more info im a parts and specs guy so exact is what im asking for thank u in advance for your help and support

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Typical convergence fault that every tube type projection set has had after several years of being used. they are STK ICs and are soldered into place. If you know how to work on solid state electronics, then its not that hard to do, but if you have no training, its not a job for the elctronic layman. It shouldnt cost more then 300 to 350 in most places and thats a bit high from around here.

Posted on Sep 16, 2006

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Posted on Jan 02, 2017

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1 Answer

The picture is out of focus , it looks like tow pictures next to each other , i think the color lenses is out of focs ,, how can i fix it


The tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures look alike.The tv convergence board have dead 2 STK convergence ICS and some or all it resistors are dead.These parts,must be replaced on the tv convergence board to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Nov 03, 2010 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

Hello, My main color were out of alignment, as per instruction on manual. I pressed the button for digital array and proceded to align the blue color, then I proceded to align the red color but I could...


The red convergence IC has failed. There are I believe 3 total convergence IC in your tv. The prefix for all three is STK392-xxx. If you can solder you can try and replace yourself otherwise you need a tv tech. With Hitachi's sometimes some critical resistors will change value as well and have to be replaced with exact equivalents. Sorry wish it was an easy solution..

Oct 17, 2010 | Hitachi 55FX48B 55" Rear Projection...

2 Answers

Unable to align cross hairs on the blue lense. Dose the lense need to be replaced?


Projection TV 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.
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
•Screen looks 3D
•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. Power light will blink. TV may also make a chirping noise.

Here are some photos of convergence problems


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fcabb43.pngCONVERGENCE SOLUTION

You can see some more examples and find a fix using this link on Fixya - CLICK HERE

May 08, 2010 | Hitachi 50UX57B 50" Rear Projection...

1 Answer

Clear picture is gone looks like watching a 3-d movie without glasses


sorry i am new at this but have had the same problem with a toshiba and it was the IC chips which control the converigence which is lining the colors back up

or it just may be as simple as converiging the colors in your case if you have not trided to yet

Aug 08, 2008 | Hitachi 55FX48B 55" Rear Projection...

1 Answer

Power up Problem


my hitachi model number:55fx48b suddenly just stopped. I can unplug the tv, then turn it back on and red led light will come on for 2 seconds and shuts back off! Can you please help me

Jun 28, 2008 | Hitachi 55FX48B 55" Rear Projection...

1 Answer

No power


The straight answer is you need a new flyback transformer model number FBT2436493A. No need to check anything, just get one and have someone qualified in soldering put it in. Don't go poking around in the unit, their are capacitors that are charged with a couple thousand volts. It can kill you.

Apr 21, 2008 | Hitachi 55FX48B 55" Rear Projection...

1 Answer

Hitachi 55fx48b


Yes prob but some poeple cant se the def.

Jan 24, 2008 | Hitachi 55FX48B 55" Rear Projection...

1 Answer

Hitachi model 55FX48B


Just had the exact same thing happen to me.

Dec 24, 2007 | Hitachi 55FX48B 55" Rear Projection...

1 Answer

Jumpy Picture on Hitachi 55FX48B


On older Hitachis the most common jumpy picture is loose connections on the vertical output IC. If you can tap on the main board and get it to act up then this is most likely the situation. I believe the location is IC401 and is located toward the front of the set on the signal panel. Not too tough to repair if thats all it is.

Jan 29, 2007 | Hitachi 55FX48B 55" Rear Projection...

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