Question about Toshiba 57H81 57" Rear Projection Television

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I cleaned the mirror and lenses but now have a horizontal line that moves from bottom to top.

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While cleaning the lence check if you mistaking bungs the service switch or bungs off a whayer check it out

Posted on May 23, 2011

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Posted on Jan 02, 2017

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I bought a used Hitachi 53udx10b projection tv and the color is off and the picture quality is fuzzy. How can I fix this?


There should be a way to calibrate the screen. Look on the panel for controls. There should be a switch that says test. When you switch it there will be two lines, one horizontal and one vertical. If the screen is fuzzy, you should see red, blue, and green lines. There should also be controls that allow you to adjust the lines up and down and left to right. Use them to adjust the lines until you have two white linens. This should clear up your picture.

Another thing to try is clean the lenses and mirror. First unplug the TV from the electric. Then remove the front screen. Usually there is a piece of trim that hides the clamps. This can normally be pulled off. Next remove the screws that hold the brackets that keep the screen in place. Once done you will see a large mirror in the back at anangle and three lenses on the bottom front. You can clean any dust from the lenses with a moist microfiber cloth. DO NOT USE PAPER TOWELS. They will scratch mirror and lenses. Use a cotton or microfiber clary lightly dampened. cloth. Now reverse the steps and turn on the tv and enjoy.

Jan 16, 2015 | Hitachi Televison & Video

1 Answer

How can I measure a sunglasses frame?


A frame has 4 basic frame sizes.1. Eye Size - refers to the horizontal width in millimeters of one of the frame's lenses.
2.Bridge Size - measurement is the distance in millimeters between the two lenses. It is measured between the two closest points of the two lenses.
3.Temple Size - is measured along the length of the temple, from one end to the other, including the bend.
4.Vertical Size (B) - refers to the vertical height of an eyeglasses lens, and is measured from the tip to the bottom of the lens aperture of the frame. The measurements are taken from a horizontal line intersecting with the top of the lens, to the horizontal line intersecting with the bottom edge of the lens. The B measurement is only important when ordering multifocal lenses; follow this link to read more about progressive lenses.

Nov 07, 2010 | Clothing Accessories

2 Answers

Horizontal streak


Clean the scanner strip glass. This is the small strip of glass that is just to the left of the large main glass. This is the only cause for black line (s) when copying using the ADF(top feed). If prints or copies fine from the glass then it is this strip glass needing to be cleaned.

May 04, 2010 | Ricoh Aficio 450 Copier

2 Answers

Cob webs behind screen


The frame around the screen just pops off. Unscrew the plastic holders from the chassis frame and the screen will come off allowing you to clean everything inside easily. The "2" thin screens are easily cleaned and put back on easily also. Don't do what I did and think the screens go into the front slot of your plastic brace, they slide easily into the wider slot. You'll also be able to clean the dust from the reflector and guns with Windex. Much better picture after wards, trust me. You would be surprised how much dust may have accumulated on the lenses.

Jan 31, 2010 | Philips Magnavox 55P9271 55" Rear...

1 Answer

Parents gave me their old Mitsubishi TS-5545 a few weeks ago. Pretty sure something shook loose on the move 'cause when I finally hooked it up and turned it on today the picture is hazy and and the...


You could Start with just Cleaning Mirror and top of All 3 Tube Lenses remove Back and try cleaning out All dust and Dirt with Thin Paint Brush then Remove Front Top and Bottom Panels and then you can Clean Mirror and Top Of All 3 Tube Lenses Then Put Back Together and see what Kind Of Picture you have then! Turn Color Off on Menu See if you Have a Black and White Picture?

Jan 16, 2010 | Televison & Video

1 Answer

I have a KF-42E200A Sony Bravia LCD tv. Recently we had to replace the lamp. Since then a horizontal line appeared at the top of the screen and it has grown to about 3 inches now. The picture itself is...


The lenses in the TV are more than likely misaligned due to heat from lamp. The heat can cause the lenses to move and the red shaded horizontal line appears over time because the lenses fall out of alignment.

You just need to have the lenses realigned and the red shading will go away.

Jan 07, 2010 | Sony Televison & Video

2 Answers

Hitachi 51UWX20B spider web like lines help


I know my response is a while after you asked, but to clean the inside of the tv case is pretty simple.

Remove the bottom speaker cover...on this model you just pull it off. There is no clips or screws.

Once the speaker cover is off you will see the bottom of the screen, there is 4-5 screws on the bottom on each side....I think 4 in the gray plastic and 1 in a black metal strap. With all of those screws out pull out SLIGHTLY on the screen and push up. The top is held in with a down force clamp and you are just popping it out of that....It will pop back in once you are done.

Now clean the back side of the screen, the mirror and CAREFULLY dust off the lenses. I myself did not want to use any cleaners (to avoid streaking) so I used a new microfiber dusting cloth. My picture became brighter and the "crack" that I thought I had was just a dust web....

Hope this helps and good luck
N8

Mar 06, 2009 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

Spider web inside tv


You need to open and clean it carefully.
  1. remove the back bottom panel
  2. Remove the top back panel (carefully the mirror is on it)
  3. Clean the mirror and the lenses (on the mirror don't use products with ammoniac) "a good tip is to use same staff to clean photographic cameras"
  4. Place back the top rear panel
  5. place back the bottom rear panel

Nov 09, 2008 | Samsung PCH521R 52" Rear Projection...

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