Question about Mitsubishi WD-52525 52" Rear Projection HDTV

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The TV will not focused, blues and red and green out of focus. It becomes blurry. For a while ( a year or so)I could jar the tv with my hand and it was focusing. Sometimes I turned it off and on a few times it would focus. However, now, no matter how much I jar it, or turn it off and on, it will not focus. Can you give me some guidance? Thanks, Joe Skinner

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Your tv is a DLP type - one in which the image is generated by a reflecting panel. The panel is illuminated by the bulb and the generated image is projected on the screen by a set of lenses called the optical engine. In your case that optical engine is loose. Open the tv and reattach it firmly. If the heat of the bulb has deformed it then it must be replaced. That will be very expensive - over $500. so my advice to you is to either find a second hand one are repair shops (or sites that deal in parts) or to buy a new tv.

Posted on Aug 05, 2010

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I replaced the crt coolant in my 62 inch phillips rear projection tv and the green and red are perfect but the blue is still out of focus when I go to the convergence the cross is perfect but the blue is...


hi,
try to change the crt base socket of blue gun and then try. i will suggest if you replace the base socket change all the three at the same time.
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crt base

ok

Jan 20, 2011 | Televison & Video

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Magnaovox rear projection tv has too much red in the picture and it is blurry


Sounds like a coolant issue with the CRTs. Look into the lens of the green and blue CRTs and you should see what looks like bacteria if the coolant nees replacement. Usually the green and blue get contaminated which dims them and makes the red become dominate and the picture will get dim and out of focus.

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Hitachi 53UWX10BA dynamic convergence works but blue is blurry


I know this set very well---you are saying convergence adjusts ok everywhere? If you understand that the blue is usually de-focused a little----there are only two ways to adjust the focus of each tube-----

1.) Behind the front speaker grill there is an inspection plate---with it removed you will see a small black plastic block with 6 controls on it; it is the MASTER SCREEN/ FOCUS BLOCK

2.) THREE of the controls left to right are Screen controls(red, green and blue) and the other 3 are FOCUS--IT IS ALL black and you need to look close to identify which is focus and which is screen---you are looking for the BLUE focus control(one of the 6)

3.) With the convergence grid on screen cover the RED and GREEN lens in the set and try to adjust the focus of the blue(I presume you know how to put the set into the Convergence mode?

4.) The only other way to adjust the Blue focus is from the back of the set---with the Red and Green lens covered up place a blanket over the top of the set that covers the whole screen--from the back of the set you will note that all three of the black focal lens have a wing nut---with the convergence grid up and only blue lines present(Green and Red lens covered with a cloth) look from behind the set at the grid---loosen the wing nut on the blue lens and slowly slide the lens left or right until the blue has the best focus possible----if it will not adjust with the focal lens or the front focus control you have a circuit problem.

I do this here for free and if this information helps you take a minute and give me a vote here. If you have any questions or need advice reply to this posting here and I will assist you.

SD TECH

Sep 14, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

3 year old rca rear projection just started going blurry. green blue and red line across the top of screen. objects have shadow.


Focus and screen control box / remove front bottom panel there you will find it / it has 3 controls on top 3 on bottom top are focus for RGB tubes bottom controls adjust screen drives for RGB.

Jan 25, 2009 | RCA D52W23 52" HDTV CRT TV

1 Answer

Projection tv is Blurry and offset


You have a focus and screen control box it has 3 controls on top 3on bottom these are the controls for Red-Green-Blue screen drives and for focus to each tube. IT should have Focus /Screen on it.

Dec 19, 2008 | Philips 50P8341 50" Rear Projection...

1 Answer

Samsung Rear Projection Problem (not convergence)


The tv has 2 focus adjustments for each tube, mechanical and electrical.

1. Mechanical focus is set by looking at screen from back (through inspection plate on back of most samsungs) and rotating the lens assembly on CRT. loosen wing nut and turn lens assembly to go through focus and back to best position.

Put convergence pattern on screen and manually misadjust bottom red and green lines convergence so they can be seen through inspection hole.

With back cover of TV off you can usually reach your hand up beside the lens assembly to loosen the wing nut then rotate to adjust. Green is in the middle. The focus will be obvious when you rotate and look

When you are finished make sure the foam dust protector is not over any of the lens assemblies and the wing nut is tight.

2. Electrical focus - located at front of unit. the front grille/speaker cover is removed and maybe a cover over the front crt inspection hole.

In the inspection hole there is a black plastic "Focus/screen adjust Assembly" with 2 rows of 3 controls.

One row is focus and the other is screen. The middle controls are for green with R/B on either side. Usually the controls are labelled as "focus" and "screen". You want to adjust the focus controls, one for each color. Look for the focus or screen label imprinted in the plastic. Don't play with the screen settings.

With the same misadjusted convergence pattern you can see a red, blue and green line. Adjust green focus and watch green line for best focus. Do same for other 2.

Screen adjustments are very exact and delicate. The easiest way to deal with them is to turn color off in Customer adjust menu. Put any color tone adjustments in the middle (low, med, high, put at med).

You should have a b/w picture if there are no crt or other color related faults. If it is close to B/W leave screens alone.

If the pix is too green, then the green screen setting must be reduced a small amount. Do not play with these adjustments as most TV repairrers have a difficult time adjusting them.

If focus adjustments don't help then focus control or CRT may be defective. Needs expert to determine.

easyab

http://calgaryconvergencerepair.weebly.com/convergence-ics.html


Jun 24, 2008 | Samsung HCM4216W 42" Rear Projection...

1 Answer

Dull vedio reception on rear projection tv


I have the same problem as Nadeem, but mine is green and blurry,,,,

Apr 21, 2008 | Televison & Video

1 Answer

RCA P46921. Just changed flyback.


First, this assumes nothing else is going on to cause it. Here's what I did. Go to the 'green grid' via the v76 menu and go through the alignment there. Notice that there are red letters, blue letters, and a green grid. While you are in this screen, adjust the red, green, and blue focus watching the individual color's item until they are in focus. If they won't focus here, they won't focus and you have something else wrong (what I do not know). Then, return to normal programming, then select menu on the remote, then screen, then adjust projection tv convergence both horizontal and vertical crosshare. That ought to get it.

Mar 16, 2008 | RCA P46921 46" Rear Projection Television

1 Answer

Screen


What you may have needed to do was adjust the green & blue crt screens to match the red. Go into your picture menu adjust, turn color all the way down to a black & white px. Now adjust each crt screen so that you end up with a true black & white px. Then adjust each focus control to get a sharp px, have your tv on a channel like the home shopping network so you can adjust each crt focus one at a time for clarity by cover the other 2 up. Then go back into picure adjust & turn color ahlf way up, you should see a better px.

Jul 01, 2007 | Philips 60P8341 60" Rear Projection...

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