Question about Hitachi 57UWX20B 57" Rear Projection Television

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Magnavox model 6P5440

This is a 52 inch tv,,,, The picture plays but is very dark, I have cleaned the lens but this didnt help It has to be a tech promblem. TIA

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Re: magnavox model 6P5440

You can turn up the Screen controls in back of set. Look for the focus block that has 6 controls on it. 3 are for the screen and 3 for the focus, in each color Red, Blue, Green. need to turn evenly to keep color balanced. On set turn color all the way down and then get a good black and white picture.

Posted on Sep 14, 2007

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I have a magnavox 55 inch screen model nu is 6p5440w102. Picture is dark tried to lighten but wont brighten up anymore.

This is an older set------with back off you will see 3 large black cylinders with lens---these are the red, green and blue picture tubes.

Clean the lens with a lens cloth or paper towel with glass cleaner sprayed on the towel.

Annual cleaning of them is suggested as dust or dirty lens will cut down the brightness---this happens gradually over time and will make the picture darker and somewhat dull looking.

I do it with set on but you should UNPLUG SET and just look to see if dust on lens.

Simple and takes only a few minutes.

Let me know what happens.


Mar 01, 2012 | Philips Projection Televisions

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If this is an older rear projection TV as the model number indicates, you can unplug and remove back cover.

Inside you will see three large round black lens---these are for the 3 picture tubes: Clean all the dust and dirt off of them with either a lens cloth or a paper towel with glass cleaner sprayed on the towel.

The lens are the light source for your picture and if dusty the picture will gradually become darker and some what blurry looking.

hope this helps you.


Sep 18, 2011 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

I need to rplace the lamp in my 43fdx15b hitachi tv and need to find out how to get to it.

this model has NO lamp, it uses three picture tubes.

If the problem is the picture is dark, dim, etc. with the set unplugged remove back cover and clean the three large black lens that you will see inside pointing up.


Sep 08, 2011 | Hitachi Projection Televisions

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Picture on tv is dark panasonic mod pt47wx42

IT may be if the set has not been "serviced" in a while a cleaning issue. If picture got gradually darker try something easy first.

Unplug set and remove back cover.

Locate the three large black lens in set based on model number, use either a lens cloth or a paper towel with glass cleaner sprayed on it and clean all three lens.

The lens are the light source for your picture and if dusty the picture will be darker and duller looking than it should be.

If this is your problem it is a good idea to clean the lens at least one time a year.

Let me know if it works OR IF YOU HAVE QUESTIONS.


Jan 12, 2011 | Panasonic PT-47WX42 47" Rear Projection...

1 Answer

Have a 50 inch tv with too much red and double picture the red is the double picture

This is a problem with the optic engine , maybe a loose prism/lens or a polariser problem , either way it a job for a service tech
hope this is helpful

Sep 19, 2010 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

1 Answer

The tv seems to be very dark when a low lit image of a movie or tv program comes on. We have the brightnes on at full level. What could the poblem be?

The simple thing to check if the set has not been "serviced" for some years is dust.

With the back cover removed you will see three large black lens---they are the light source (red,green,blue) for your picture.

If the lens are dusty the picture will be darker and duller looking.

Clean with a lens cloth or a paper towel with glass clean sprayed on the towel.

If this told you something you did not know, rate this solution as very helpful as I do this here for free.


Sep 14, 2010 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

I have a 55 inch phillips magnavox t.v. Im almost positive its a projection t.v., my problem is that the picture shows up really dark, you can see when the show is a bright show, but comes up a weird...

I would say your small signal module is bad. This is the board with the convergence ICs. Have a tech or yourself pull the board out and replace the ICs and some resistors. Checkout They will have your model and its symptoms. Hope to guide you in the right direction!

Apr 29, 2010 | Philips Magnavox 55P9271 55" Rear...

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I have a philips magnavox 60 inch model 9p6034c103 dark pic

Sounds like a lamp, but its free to open the back and clean the 3 color lenses and the big mirrior that will be directly behind your head.

Taken from the service manual:

2c) Using denatured alcohol on a cloth made of 100% cotton or a lens cleaning tissue, gently clean the Celement (fisheye) lens, coupler and the CRT faceplate..

Caution: Do not use soap or detergent type substances to clean the coupler and its related assemblies. assemblies must be completely dry prior to reassembly

ALSO: I have heard that a bacteria grows in the color fluid and coats the lenses. the fluid is VERY Poisonous, so please please dont dont clean the inside without research and reading the service manual!!! I've read posts where unknowning people opened them and it poured out.

Manual Library you should find all you need here:

GOOD luck...

Nov 10, 2008 | Philips Magnavox 51MP392H Rear Projection...

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