Question about Hitachi 57GWX20B 57" Rear Projection Television

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Picture is bowed looking.skinny picture in the middle and almost normal at the edges..also getting 3 of every picture and text in blue,red and greenish yellow..magic focus is not working at all,not even trying to focus anything..have tried to get into the service screen and either i was using the wrong instructions or thats not working either.any idea's???

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Your convergence amplifiers are bad. You probably also have a fried fuse that feeds power to these amplifiers, and you may have to replace some of the resistors in the convergence amplifier circuitry. Check these parts with an ohmmeter after you remove the amplifier modules so any shorts in the amplifiers won't interfere with the ohmmeter readings.

Do not try to adjust the convergence before replacing the amplifiers. It won't work, and will only make a lot of extra work trying to adjust it back after you install the new parts. (Now you can be glad you couldn't get into the service screen.) BTW, the instructions for getting there probably want you to press a volume control or other button on the set itself while pressing the power button on the remote control. A lot of people try and fail using only buttons on the remote control, but for this purpose they are not interchangeable with the ones on the set.

The convergence amplifiers are two black plastic slabs marked STK392-nnn (nnn is a 3 digit type variant number). They are bolted to either an aluminum plate or finned block (heat sink) on the deflection circuit board, and there are 12-18 pins coming out of the bottom edge of the slab soldered into the circuit board. When you replace them (change both), clean off the white grease on the heat sink, and apply a very thin film of new heat sink compound to the back surface of the new amplifiers before installing. You need just enough to fill in any microscopic voids and ensure good wet contact heat transfer; too much will actually reduce heat transfer. Spread it out with a putty knife or similar tool, and don't scratch the parts (scratches won't ruin them, but will reduce heat transfer efficiency).

I wonder about the greenish yellow color. It should be green unless there is red overlapping it. Either you have a problem with your color vision or the coolant fluid in the green CRT assembly is breaking down (a separate problem from the convergence amps). This will cause muddy yellowish-looking colors. CRT coolant should be clear, but will turn yellow if it's bad. It is replaceable (there are a number of online resources describing the process). The major concerns are to absolutely avoid spilling any inside the set (broken-down coolant is conductive and will destroy electronics as soon as you turn on the power), and marking the initial positions of everything so you can get the optics realigned without a lot of hassle.

Posted on Oct 06, 2010

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Hi I have a rca hd52w59. the top half of the


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 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

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

Jan 24, 2010 | RCA HD52W59 HDTV Projection Television

1 Answer

We have a Hitachi 53udx10b tv. Recently it was


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 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

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

Dec 05, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

The picture is bowed and has a rainbow affect around the edges


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 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

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

Dec 01, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Bowed picture colors off


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

bb0cf99.pngSOLUTION

You 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

Nov 02, 2009 | Mitsubishi WT-46807 46" Rear Projection...

1 Answer

Bowed picture. Red,green, & blue lines around picture


Go to menu setup look for Convergence,see no Convergence.U have an open Fuse(FL231)located right side of the Flyback Transformer.
There is 3 in a roll small brown rectangle looking caps,but they are fuses,it the middle one is dead.

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1 Answer

Bowed picture and color misalignment


Replace both STKS ICs Ck low ohm resistors 2.7ohms most of the time there will be 2 of them bad.

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1 Answer

Green convergance wont adjust, bowed screen


Green really shouldn't be adjusted, you adjust red and blue to the green. When a color is bowed that indicates that a part or two are bad, probably the convergence output IC's and possibly a fuse or fusible resister. You may need a tech to come adjust it for you because after replacing IC's the adjustments should be done in the servicers menus not just in the consumers menus.

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1 Answer

RCA Projection TV Model #p46921, Has bowing effect of pictures


Go to Menu then setup look for convergence if you do not see convergence on menu then you have a open FUSE FL231 it is on right side of FBT flyback transfomer there is 3 of them small brown rectrangler looking caps it will be the one in the Middle.

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1 Answer

Blue convergence problem


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*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

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

Sudden discoloration, ghosting, bowed horizontal lines in top and bottom of picture


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*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

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Nov 10, 2007 | Samsung PCL6215R 62" Rear Projection...

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