Question about Philips ProScreen 4650 Multimedia Projector

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Philips ProScreen 4650 LCD Projector

My Philips ProScreen 4650 LCD Projector has red dots every were and a red ghost

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Posted on Jan 02, 2017

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SOURCE: slight RGB alignment problem

This picture can probably show you better than I can describe it;
http://img114.imageshack.us/img114/8957/spa0108pi0.jpg

Posted on Jun 01, 2008

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SOURCE: slight RGB alignment problem

We had the same problem, and it seemed to fix itself when we did the following (not sure exactly what it was we did, but it worked):
1) Remove the outer box on the right side (one by the lens), rear, and top. (you'll need a T9 torx screw driver with a long shaft as the first 4 screws are on the bottom under the rubber feet and caps on the front corners of the bottom.)
2) On the top is a board that has 3 orange cables coming out of it as well as some others. We completely removed that board and reinstalled it.
3) We determined that the 3 orange cords control the color out put.
4) So leaving all of the outer sides off, when we reconnected the board and provided power, the image came out properly aligned.
5) We're now struggling w/color. Based on how you insert the orange cords you get different color saturation. We seem to be missing a proper/consistent red display.
6) But the colors are all aligned and the image clear. We're getting there . . . .

Be very careful!!! You could electrocute yourself.

Posted on Jul 18, 2009

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1 Answer

Convergence phillips proscreen


The adjustment requires disassembling the projector. It's not really something that should be attempted in the field.

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Ghosting Image


hi!!!
may be the lens has alignment the lens
of your projector there a adjustment
try to adjust!!!

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Phlips proscreen 4750, how do i open up the case to get to the inside/ and how do I adjust the convergence?


There is not a lot you can do with it, even setting up the static convergeance as you require a crosshatch generator, dot generator and specialist tools to adjust the LCD immagers.
It is not practical for the laman to attempt an adjustment of this sort.
Take it to a Philips Specialized Repair Centre.

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The projector does not operate the "lamp" led blinks in green and turn red after one minute. The switch on button does not replied.


either it's overheated or needs a replacement bulb.Do not cover this unit with anything as it will prevent cooling down..

Jul 27, 2009 | Philips ProScreen 4750 Impact Multimedia...

1 Answer

HOW CHANGE DE BULB?


On the side you plug everything to.... has 2 screws.remove them ..after completly removing screws..remove cover plate remove the 2 screws holding the bulb housing... you will see a hinged flap pull on this and the whole unit comes out..DO NOT REMOVE IF BULB IS HOT!!!!!
The new bulb comes with a new housing Please do not touch the bulb the oil from your hands will reduce the life of your bulb..Slide the new one in put the screws back, , the cover back and thats it

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1 Answer

Dark screen


Dear Bob,

Pls contact me at the soonest , i can solve this and i am willing to buy your unit.

master300p@hotmail.com

jazz

May 23, 2008 | Philips ProScreen 4750 Impact Multimedia...

1 Answer

Picture off and shadow of back images.


Hi Grim159

I've had this once on a Epson Projector and the only way I could this right was by replacing the Mainboard.

Hope this is of help.

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3 Answers

Slight RGB alignment problem


Please describe the allignment problem

Apr 19, 2008 | Philips ProScreen 4650 Multimedia...

1 Answer

Help


Your convergence might be out.Go to convergence settings and try the setting and it can be done electronically.

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