Question about Akai PT5492S 54" Rear Projection Television

3 Answers

I have no green color

Is it the bulb or circuit board or no power to it

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  • enzociardi Nov 17, 2008

    i might have said it wrong i have red and blue colors the green color does not light up

  • enzociardi Nov 18, 2008

    ihave opened the rear panel and saw that the red and blue bulbs were lit but not the green one
    thank you

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3 Answers

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  • Master
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Check filament / heater connection of green gun at CRT socket mounted on board, might have cold / dry solder joints.

Posted on Nov 18, 2008

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  • Master
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The green lamp has gone in the back of the TV, just like light bulbs they only have a short life cycle

best regards

Posted on Nov 17, 2008

  • Lee Hodgson
    Lee Hodgson Nov 17, 2008

    oppps i forgot to say that you can change these yourself :)

  • Lee Hodgson
    Lee Hodgson Nov 18, 2008

    to take the green bulb out is should just unscrew, take it to a store and purchase another one, before you do that you can check that the green connection works by screwing one of the other bulbs to it, this will not damage the tv at all, if the bulb lights up then you know its the bulb and you have to replace it to get a decent picture

    kind regards

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  • Akai Master
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If there is not power at all, not even the red led on , then test a different power outlet.

If it is not the power outlet, then it is a faulty power supply board.

Posted on Nov 17, 2008

  • Ginko
    Ginko Nov 17, 2008

    If the model is the same listed on title, ti should not have any green lamp.

    The fact is that the Color convergence is not working because one of the convergence ICs is faulty.

    The convergence board should be tested.

    If your model is different from the one in title, then it can be a faulty crt.


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...
...

should look like that 3 screws in a row on top of another three screws each of thees control the power and focus of each color this is a somewhat delicate process and is a huge pain on larger tvs that you cannot completely see the picture or color while you are directly under in front of it so I had my gf come in the room and sit across to let me know which color was doing what if you dont have someone you will need to check after each adjustment

now the diagnostic
as i said each screw controls a colors power and focus the focus is used if you see an outline of a color around pictures if everyone looks like a dead jedi with a blue aura around them the blue focus needs to be adjusted and so on for each color if you skies or blue screens seem feint your blue power probably needs to be turned up and so on for each color

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hope this helped
Robb

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http://servicemanuals.vstore.ca/

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