Question about Pioneer PRO-700HD 64" Rear Projection Television

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Over time the picture has been getting darker. Is there a projection bulb that needs replaced or does it just need a good cleaning. A sultion in this site said something about a fluid ??

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Cleaning the bulbs, and checking the cooling liquid levels on all 3 guns is all it should need.

Posted on Jun 12, 2011

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Tv is about 6 years old hd-ila 56g657 have replaced lamp 3 times over that time but the picture started to get darker and darker.the last time i replaced the lamp it did very little good and the ptcture...


you cleaned the reflector glass, then tried to make the manual adjustment of the color to have good convergence. you can do the adjustment in the menu set up. if can not get with adjustment, their might be a problem in the convergence circuit board.a bad convergence ic or resistor.

Nov 18, 2012 | JVC HD-56FB97 HDTV

1 Answer

The picture seems to be getting darker. Its not as bright and sharp as it used to be. Its about 9 years old but has not been used very much. Might it need a new bulb or something? 57HX81 Proj TV Color...


simple: remove back cover and locate the three large black lens you will see top and dead center, clean them with either a lens cloth or a paper towel with glass cleaner----they are the light source for your picture and should be cleaned once a year---as they get dusty the picture gets darker and duller looking.\\

SD TECH

Apr 12, 2011 | Toshiba 57H81 57" Rear Projection...

1 Answer

Picture is gradually getting darker


It sounds to me like your bulb is going out. You have a rear projection TV, and since so, there is a bulb that shines the image onto your screen. Because of this, you need to replace the bulbs after awhile. Call customer support or look around online for a replacement bulb and directions on how to change it. Very simple, but takes a little time and effort. :D

Mar 20, 2010 | Hitachi 46F510 46" Projection HDTV

3 Answers

My JVC 56G787 is dark and bright is turned all the way up


You need a professional.
Stop using the TV until it is repaired.
Continue to use it and your problems will multiply and grow more expensive.
Call the manufacturer to find you nearest authorized service center.

MR. TV Sales & Service Inc
Milwaukee Wisconsin 53405
(414) 762-8600
Established 1974

Mar 24, 2009 | JVC HD-56G787 Television

1 Answer

Picture seems darker or less intense light


You will need to post tv brand and model number

Feb 27, 2009 | Toshiba 50A60 50" Rear Projection...

1 Answer

Hitachi projection tv.7years old.can i clean or change the bulb,w


Remove the front screen

Carefully Remove it

Pull the bottom off
Then remove the screws on the bottom of the screen
when you have them off lift the screen assembly up

be careful of the wire going to the panel
you can move the screen to the side and gain acces with out unplugging the wire but again be careful
clean the mirror and the projection bulbs

with glass cleaner and spray only on to the rag not the mirror or projection bulbs


Put it all back together and your picture should be bright as before












Feb 09, 2009 | Televison & Video

1 Answer

Optical Engine in a Mits WD-52527


You have to be careful when replacing the projection bulb assembly. Don't aways look for the cheapest as they are rip-offs that do not last long and are not as bright. Dont buy OEM "compatible" only OEM originals. Call Mits Customer Service for advice

Apr 26, 2008 | Mitsubishi WD52527 52" Projection HDTV

2 Answers

Picture getting darker


The tv has a room light sensor,
shine a bright light at it , does picture get brighter?
other wise when it is cool open the bulb door , is it coated or blackened, Don't touch bulb at all.

and a heavy covering of dust on internal mirrors will cause the same effect.
you will need help to clean it.

Jan 26, 2008 | Sony Grand WEGA KDF-55WF655 36" Rear...

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