Question about Hitachi 43FDX01B TV

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Color alignment there a bow like line on the bottom and top of my screen plus any words or images that appear on the screen have a visible shadow and the colors dont quite line up either

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Re: color alignment

It sounds like one of your convergence IC's has burned out and needs to be replaced. The defective IC will have to be replaced, the low-value resistors next to it checked and the convergence circuits realigned. If you do not have any experience working inside projection sets, allow a qualified tech to handle it for you.

Posted on Aug 31, 2007

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Top and bottom of picture in center of screen dips like a bow tie

The tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board is dead.The tv convergence board reqiured changes it 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board problems to solved the tv picture convergence picture problems.The shop,will cost like $300-350 for parts and labors.

Feb 01, 2011 | Mitsubishi WS-65908 TV

1 Answer

I have a 52" RCA HD. I turned it on and for a few minutes it played great. Now the screen appears warped on the top and bottom.

This is a 52" RCA DLP projection tv correct?Yes,than a problems,u have is known as a convergence problems,it dead.The colors lines R,G,B mis alignment,have colors shadow pictures or 3D pictures.The tv convergence board,the 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced to solved convergence problems.The shop,will cost u $300-350 for parts and labors.

Sep 14, 2010 | RCA Standard (CRT) Televisions

1 Answer


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

Sep 14, 2010 | RCA HD52W58 52" TV

2 Answers

Hitachi UltraScan HD Projection Screen 43FDX01B

The convergence board is on the fritz! See and see if they have a kit just right for you!

Jan 12, 2010 | Hitachi 43FDX01B TV

1 Answer

Visual transparent lines at top of picture

You have a vertical output circuit problem. This was common for Philips' sets. Have a repair shop check it out. Should not be too expensive to repair.

Oct 15, 2009 | Philips 27PT6441 27" TV

1 Answer

Screen is bowed on top and bottom.

Projection sets have two very common problems outlined below.

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. The TV can also shut down when the convergence starts to fail.

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, RCA and others.

You can more info and a DIY convergenece repair kit with instructions from TV Repair Kits using the link at the end of this article.

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

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*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


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

Jul 13, 2009 | Samsung PCL5415R TV

1 Answer

Rcs hdtv multiple images

The problem you're having is due to the failure of the convergence amplifier circuit. In that circuit are some components which amplify or control the signals to the dynamic convergence yokes, which line up the red green and blue images to superimpose them over each other to create a proper colour picture. When you get a failure in that circuit, it no longer aligns the images properly, and generally you get what appears to be badly set geometry in multiple colours. In some cases you will also get a problem with the part of the power supply that supplies the convergence amplifiers, or the digicon, which is the digital convergence control module.

Jun 12, 2009 | Hitachi 43FDX01B TV

1 Answer

Multi-color double images or shadows and curved screen

Alrighty, very common problem on this set. Here's a rundown of the repair if you're a DYI:

With the back cover off you'll notice a set of boards on the bottom of the TV and a pair of boards sitting up over the two bottom boards. The problem lies in the upper-right hand board which is the color convergence power supply. Either replace or repair this board. The repair involves the main power mosfet (a three legged regulator on a heat sink) and two diodes next to it.

Next, the bottom right hand board needs to be removed and a fuse replaced next to the flyback. If you are versed in electronics I can detail the repair further otherwise you're going to have to have a shop do the repair.

May 18, 2009 | RCA HD52W58 52" TV

2 Answers

RCA 56 inch hdwidescreen

Did you use the Automatica Convergence to try and straighten it out? If that does not help, you can manually adjust the convergence.

Jul 12, 2008 | RCA HD56W58 56" TV

1 Answer

White Horizontal Lines near the top of my Screen

this symptom is what we called vertical fold-over. vertical fold-over is characterised by a white horizontal bar on the bottom or top of the raster due to the concentration or compression of the trace lines. it an image is present, the bottom or top portion is fold over. this is caused by a vertical deflection current with poor linearity, which compresses the trace lines at the bottom or top of the screen. this symptom is is caused by a defective sawtooth wave genetator circuit, or improper biasing or defective feedback circuit of the vertical drive or vertical output transistor/ic. the negative feedback circuit in vertical deflection circuit compensates for the linearity of the trace portion of the sawtooth wave. a decrease in the capacitance of the sawtooth generator capacitor is usually the trouble. but if you do not understand anything what i have written here, better bring it to a qualified tv technician for your own safety also. good luck!

Mar 01, 2007 | JVC TM-2703SU 27" TV

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