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No blue colour in t.v. 5yrs old, tube is very good

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  • goldmit Aug 26, 2008

    Mitsubishi WT-46805

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  • Projection T... Master
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Possibly the Blue video output on the Blue CRT PCB is bad. Please reply to this same post with your model number and I will try to assist you.

Posted on Aug 01, 2008

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Got a rainbow line in the middle is this the picture tube the tv is 5yrs apex tv


HI,

ITS NOT PICTURE TUBE PROBLEM ,,

ITS PROBLEM WITH COLOUR CAPACITORS WHICH INSIDE TV,,

APPROACH TECHNICIAN..


TNKS

RABBANEES

Nov 11, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Problem with a colour display on Hisense tv


If your picures are all purple it means that the green colour is missing. TV colour is made up by mixing Red, Green & Blue. Removing Green leaving Red & Blue makes purple. Study the green colour circuit for a fault and confirm that the green gun inside the tube is working.

Aug 31, 2009 | Hitachi 60SBX78B 60" Rear Projection...

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No blue in picture


Hi and welcome to fixya, it is the colour wheel problem,,,,,,,,,this is common problem please check it ...it may be also cathode ray tube... thank u.........

Jun 03, 2009 | JVC Projection Televisions

1 Answer

Can't turn blue down, it overrides the other colours.


Conveergence is a huge problem here and if it overides the support your trying to give it it will be manually steered so it does not overide other colors.. You can do it carefully or can have a repair guy do it in about 30 mins or less good luck to you..

May 14, 2009 | Sony KP-57WV700 57" Rear Projection HDTV

2 Answers

The colour is off and the conversion


You have a problem with the blue and green tubes having a fungus growing across the face of the tube, thus blocking the light/picture. This will cause the color to be way off and the focus as well. Need to have the fluid changed in blue and green tubes. The red never seems to be affected...must be the red wave lenght inhibits the growth of algee or something. Anyway....That's what you need, not the convergance chip STK's. Trust me on this. T.V. tech. for over 20 years...see this ALL the time. Good luck.

Dec 19, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Mitsubishi lamps


This set does have a lamp, it utilizes 3 picture tubes (red, green, blue) The tubes are not available as new any longer. It is recommended to replace all 3 after the reaches 5yrs of age because a new tube will over drive the others in brightness but it is possible to only replace the defective one. You can try Tritronics at 800-638-3328 for rebuilds.

Nov 11, 2008 | Mitsubishi WS-55819 55" Rear Projection...

1 Answer

Toshiba colours gone wrong


Yes it is repairable. One of two things is wrong. The color wheel is going bad or the DMD board is going bad. These are the most common repairs needed for a Toshiba. I hope this will help.

Mar 23, 2008 | Projection Televisions

1 Answer

3 images in different colors-42 in Sony projection


So this is a rear projection TV.

Chances are the tubes are out of alignment. When cleaning or anything never move the tubes as it will be hell to get em back properly.

In the back you can take off the rear panel and move the tubes to partially re-align the picture.

This is generally followed by a model specific procedure using the remote to bring up alignment grids to finalize the picture alignment.

The reason for the 3 colours in the picture are that the rear projection units use Red, Green and Blue tubes to create the one colour picture.

All in all... When I messed mine up it took about 2 hours to set it straight again.

Now I just have to fix my flashing screen problem and i'm set.

Feb 16, 2008 | Sony Grand WEGA KDF-42WE655 42" Rear...

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