Question about Hitachi 46F500 46" Rear Projection HDTV-Ready Television

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Have green bow in top right and green shadows all over

I took the tv apart and the green bulb when turndon you can see the bow in the bulb when i try auto focus a green 3 lights up when its done and in the manual focus you cant line up the lines and i cant get the green lines to moveis any of this normal thank you

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Your convergence board needs to be replaced..its out.thats why the bow in the pic

Posted on Oct 30, 2008

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I have a HCN4727w samsung. Red/green shadowing. Bowed image


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 17, 2010 | Samsung HCN4226W 42" Rear Projection...

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Ws55809 tv picture bows at top and bottom. Also has shadows. Is it the bulb and where do I get one.


You have a convergence problem. The 3 picture tubes are fine. The small signal module needs reworked. The board with all the rca jacks.

Nov 29, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

BOW PICTURE AND HUE GREENS REDS AND BLUES LIKE SHADOWS


the tv had intermittant solder connections already but h\they appeared when the tv was moved to hook up the digi-box. The solution could be as simple as resoldering the power convergence amps.

Aug 06, 2009 | Projection Televisions

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Picture is bowing & has red & green shadows


what type of tv do you have. sounds like a loss of covergence. if its

May 04, 2009 | Projection Televisions

1 Answer

TV has alittle dark haze,not bad,9inchs in from side,top to Bott


Probably the light tunnel. The tunnel is a square tube made up of 4 mirrors glued together.

It looks like this from the side: |_| (with a piece on top too.)
When the glue breaks down, it shifts inside the little mirror holder. The shifted mirrors looks like this /_/ what you are seeing is the shadow of the tilted mirror tunnel.
ON the RCA's there's not a good fix.

RCA's response:
"Ok, well sadly they do not offer the light tunnel anymore, which is what you need. Sadly you would be rendered to get a whole new light engine assembly. That would be the D.N.D module, light tunnel,color wheel,optic spanner, and oci. mirror. Your best bet would be to search ebay2_bing.gif for a broken engine and replace it that ways."

That is the ONLY response I got from them.

I took the set apart and found the 4 tiny mirrors. I will be attempting to epoxy them together. (The set is dead anyway, why not try?)

Feb 25, 2009 | RCA HD61LPW42 61" Rear Projection HDTV

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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.

Jan 31, 2009 | RCA R52WH73 Projection Television

1 Answer

Tv screen is squeezed only straightens out if i bump the top of tv


This is likely your convergence IC solder connections. Does it look bowed and rainbow colored? The red, green, and blue will be mis-aligned causing a shadow effect. If you can bump it then the ICs (chips) are still ok, it just needs resoldering.

Dec 06, 2008 | Mitsubishi WS-65809 65" Rear Projection...

2 Answers

Horizontal bow and shadow


Replace convergence IC's--then re-check convergence alignment in servicer mode,if necessary.

Sep 27, 2007 | Philips 9P5544C 55" Rear Projection...

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