Question about JVC HD-56G787 Television

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2 dark spots in the bottom of my HD-56787 jvc big screen after washing with windex !

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6ya6ya
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Posted on Jan 02, 2017

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tat4u
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SOURCE: Dark Blotch on rear projection TV screen

usually these are caused by cleaning the screen with a damp cloth or fkuid rear projection tv's usually have two plastic screens separated by about quarter inch with bulbs between,one being a magnified screen.problem is,condensation can occur causing various blotches,letting the screens naturly dry out usually solves this but failing this you have to strip down and wipe them with clean dry cloth.be careful though the inside screen is very delicate.

Posted on Feb 21, 2008

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mistersony
  • 320 Answers

SOURCE: Gray spots on screen on a JVC HDILA model HD 56G 787

Spots on the screen/picture can be caused by three things. Dust on the inside of the screen, on the mirror or in the light engine or optical block. The first two can be corrected by you if you can gain access to the interior. If it is the third (light engine. it will require a technician. If this answered your question, please be sure to rate the answer. Thanks!

Posted on Oct 31, 2008

  • 14 Answers

SOURCE: Gray spots on screen on a JVC HDILA model HD 56G 787

The HD-ila sets accumulate a lot of dust in the light engine. The worst offender is the little fold mirror just under the lens. I take my set apart about every 8 months or so to clean all the dust from the light tunnel and all lenses, mirrors, diffusers etc. The picture really regains it's pop when this is done. Unless you are a skilled technician though, I would recommend against attemptimg this procedure as you need to disconnect the individual color lcds. Check with a local service center to get it properly cleaned.

Posted on Dec 29, 2008

  • 1 Answer

SOURCE: I have a 56" JVC rear projections HD ILA tv.

Turn tv off and unplug it. Take the access door off either side of the tv. Use a dust cleaning tool like a swiffer with an extension (or make one). Clean off lens (most likely the problem). I have the same thing that happens to my JVC 61". You can use a vacuum with extension if your VERY careful.

Posted on Aug 31, 2009

  • 336 Answers

SOURCE: Having a big yellow spot background in the middle of the picture.

Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!

Posted on Apr 09, 2010

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1 Answer

JVC HD-52Z575 tv shows only a grey picture screen. I was watching a channel and tried to change channels and new channel won't come up, only grey screen.


JVC HD-52Z575 52" HD-ILA HDTV-ready rear-projection TV

www.amazon.com/JVC-HD-52Z575-HD...HDTV.../B...

Amazon.com, Inc.JVC HD-52Z575 52" HD-ILA HDTV-ready rear-projection TV ... The picture was artifacted and the color was good, but not great. ... From 5' some minor issues could be seen and the MPEG2 format did show its limitations, but at 10', it was a truly great experience! ... There is no true gray temperature, only high and low.

HOW TO FIX A JVC HD BIG SCREEN TV - YouTube

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https://www.youtube.com/watch?v=r4v-xzUpQDM
Apr 11, 2012 - Uploaded by kyle dubb
Did your HD D.L.P. t.v. stop working? This movie clip will showyou step by step how to easily fix your big ...Missing: grey

JVC HD-52Z575 HD-ready rear-projection D-ILA monitor ...



Jan 10, 2016 | JVC Televison & Video

2 Answers

Is there a process known to man that cleans windex streaks off an lcd screen?


How to Clean an LCD Screen
So, first of all, let's decide what we don't use to clean it:
Anything containing bleach or ammonia, such as Windex. That will react with the plastic and make the plastic screen become cloudy and discolored.
Anything sharp, pointy or abrasive.
Your easiest choice is one of those LCD cleaning solutions they sell in places where they sell computers. But they're expensive, and why bother when you can make your own solution for next to nothing?

What you'll need:
Distilled water (available at your supermarket; tap water leaves streaks and minerals).
White vinegar (you may substitute isopropyl alcohol; either way, make sure these substances are diluted before they come near your screen).
A clean, soft cloth (never use any kind of paper product).
A spray bottle.

Directions:
In the spray bottle, mix the distilled water and alcohol/vinegar, in a 1:1 ratio.
Turn off the LCD display.
Spray the mixture onto the cloth, never directly onto the screen.
Wipe gently - oh, so gently - from top to bottom. Do it horizontally, too, if you think that leaves a cleaner result.
Let the screen dry before turning it back on.

Hands Off!
Fingers leave dirt and oil smudges that must be cleaned off. Also, every time you touch the screen you risk doing damage to those tiny creatures inside that hold the colored flashlights. Keep your fingers to yourself.

May 12, 2015 | Televison & Video

1 Answer

JVC HD-52G886 HDTV Television screen is dark


usually it is the lamp this set uses, has it been replaced or is over 2 years old?

Oct 29, 2012 | JVC HD-52G886 52" Rear Projection HDTV

1 Answer

Dark spots


Take a good look at the screen on an unused video input to see if you seem them(a dark room works better).

This could to my thinking be either dust (based on the brand/model posted here-let me know if different) on the optical lens this set uses OR a defect in the optical light engine.

Also, I am aware this model does have software upgrades for different issues----when first out we had them and had to go to the site and download upgrades (two of them) and manually install them with a computer into the set---issues then were wrong colors and even lettering backwards........

Mar 24, 2012 | JVC HD-56G787 Television

1 Answer

Dark area on screen


if its a LCD then the crystals died out in that spot. if its a plasma then the lights burned out and if its a projection t.v you need a new bulb

Dec 30, 2009 | JVC HD-52G787 52" Projection Television

1 Answer

Have black dust looking spots on my screen.


Howdy;
Yes there is a way. The easiest for you would be to remove the back top of the TV. That will give acess to opt lense and mirror. But first check the Lamp and inspect the lense that the Lamp into. It does not take a lot to cause your concern. Use super soft cloth and wipe surfaces.

Good Luck,Big Irish.

Nov 22, 2009 | JVC HD-56G886 56" Rear Projection HDTV

1 Answer

Gray spots on screen on a JVC HDILA model HD 56G 787


The HD-ila sets accumulate a lot of dust in the light engine. The worst offender is the little fold mirror just under the lens. I take my set apart about every 8 months or so to clean all the dust from the light tunnel and all lenses, mirrors, diffusers etc. The picture really regains it's pop when this is done. Unless you are a skilled technician though, I would recommend against attemptimg this procedure as you need to disconnect the individual color lcds. Check with a local service center to get it properly cleaned.

Oct 16, 2008 | JVC HD-56FN97 56" Television

2 Answers

Gray spots on screen on a JVC HDILA model HD 56G 787


The gray spots are caused by dust on your lens, very easy to clean.

Power down the TV.

If you open the right side access panel (right side as you are looking at the front of the TV) you can see it in the middle, it's not very big. Using a scratch/lint free cloth, gently wipe off the lens or use a vacuum to **** up the dust being careful not to actually touch the lens.

Replace the access panel and enjoy your spot free screen.

Sep 29, 2008 | JVC HD-52G786 52" Rear Projection HDTV

4 Answers

JVC HD-56G886 56INCH REAR PROJECTION TV


I fixed it!!!! If you can open one of the sides (on the JVC there is a little door with a screw), then you can clean the projector lense in the middle on the bottom. It kind of looks like a big light bulb. It seems there is just dust on the glass that is projected onto the screen. We had a big gray spot and cleaned it with a damp glass cloth and Ouila! It disappeared. I scored MAJOR brownie points with my husband for this one! He wanted to replace the TV!

Sep 25, 2008 | JVC HD-52G786 52" Rear Projection HDTV

2 Answers

Dark Blotches


This is probably caused by dust, either on the mirror, lens, or possibly inside the light engine. There is a 5" dia hole on the side of the back of the tv where you can take out one screw and take the door off. this is just big enough for you to put your hand through to clean the mirror and lens. Hope this helps.

Mar 30, 2008 | JVC HD-61FN97 61" Television

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