Question about Hitachi CP-RS55 LCD Projector

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Loss of good colour constant blue ghosting to picture, tried adjusting colour and gamma settings, no luck new lamp fitted still same problem. reset to factory settings picture gets worse? help

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This will require a technician to repair.

You can do it yourself if you have the service manual and some knowledge of electronic repair, and access to the necessary parts.

It's generally cheaper to buy a new unit than to have one repaired though, unless of course it's under warranty.

Posted on Apr 06, 2011

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Posted on Jan 02, 2017

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My jvc is showing black and white what do i do


Hello
Just reset the picture adjustments and se whether the colour comes up or not. If not, autotune it once more.

Reset resets all picture adjustments (tint, color, picture, bright, detail, color temperature, dig.
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Press the MENU button

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Hitachi 50" Ultravision too much yellow, not much blue


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Greenish dark, with multible lines across top to bottom of the screen.


That looks like retrace lines. Anyway, you should try to adjust screen pot not focus pot. Make sure you are turning blue screen pot (there are 3 focus pots and 3 screen pots) and do it slowly. If you turn it too much, it will affect your grayscale

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My Sharp LCD 26" TV shows most black and shadow colours as vivid blue, I have tried resetting the colour to factory reset but that didn't seem to help at all. It occurs on all channels and on 3...


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Samsung tv settings


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1 Answer

Bad ghosting of all colours


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
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*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....

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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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this symptom is characterised by the loss of one or two primary colours. this symptom can be classified into three cases: 1) loss of red colour, 2) loss of colour blue,3) loss of green color. this symptom may be caused by a trouble in the colour demodulator, in the color amplifier or in the colour subtraction amplifier circuit. in your case loss of blue colour. this is a very complicated problem that you need some special test equipment like oscilloscope and color pattern generator in order to trace the signal. tune the receiver to a color broadcast station(a colour bar generator can be used to transmit a colour signal to the set). check the Z-axis demodulator, z-axis amplifier and the B-Y output circuit for the chroma signal. observe the signal process with an oscilloscope. if the color signal is not present use a VOM to locate the defective component in any of the above circuits. check the transistors and the resistors in the collector circuit. good luck!

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