Question about Hitachi 53SWX10B 53" Rear Projection Television

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Blue Projection Gun

Hello, I was wondering if you know how much it would cost to get the blue projection gun aligned, its off by about 3-4 inches? The red projection gun is aligned perfectly, as well as the other projection gun. It's just the blue gun thats out of alignment and distorting my picture. If you have any relevant info, please render.

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It is not the gun ,but the convergence IC that needs replaced providing that you have went into the tv menu and selected convergence and manually adjusted the blue convergence.

Sincerely the Hammerman

Posted on May 14, 2008

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The screen is green and the tint option in the menu cannot be adjusted.


This symptom usually indicates CRT failure. Projection TV's, especially older types use 3 CRT "guns" to project the image on the screen. One is Cyan or Red, one is Green and one is Blue. If the Red and Blue become weak or do not project, the Green gun overpowers the output of the other two. These three "guns" are aligned exactly on top of each other so when all three are correctly functioning, the correct colors are projected on the screen.

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I have a samsung 47 inch rear projection w/self focus there is a continuos blue shadow around images is there a quick fix


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Jul 05, 2009 | Mitsubishi VS-45607 45" Rear Projection...

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1 Answer

Philip RPTV


There are a few malfunctions that can cause such.

ONE: Mirrors out of location. But it usually throws the picture off center, also. This can be caused if the set is dropped or kicked badly.

TWO: Out of focus. Can be caused by drift of the circuits or from a malfunction of the video drivers. You can check this by going to the crosshairs and see if the lines are sharp and narrow. If not, then the focus is off badly - most likely the blue gun. You may be able to set the focus and other levels for brightness and contrast and color to optimize this weakness as these are all somewhat interrelated, especially in the extreme settings. You can make adjustments for these above what is available from the OSD by getting into the service mode. See this web site for instructions on how to enter it. http://www.fixyourowntv.com/servicemenu.php

THREE: Worst case is the blue gun or projection tube is failing and needs replaced - which I don't recommend due to the very high cost of doing so.

FOUR: And it is possible the blue gun/tube has been knocked out of alignment by dropping or moving the set.

I favor the focus adjustment as the first remedy to try. You can do that yourself. But if it turns out the mirror is out of location or the blue gun is defective you will need a technician for help on those items.

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1 Answer

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Need further info, let me know.

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1 Answer

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the fluid in the bule gun is cloudy therefor the image you need to replace the fluid (coolant) inside the gun. the fluid is toxic (eytholene glycol). so have a tech do this for you. the repair may cost $ 325.00 or so.

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Milt,
What are you referring too when you ay the blue color gun is offline? Is the blue crt not lighting? Or just the convergence alignment off??
Bill

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