Question about RCA D52W20 52" Rear Projection HDTV-Ready Television

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Water looking droplets on inside of blue lens

Blue lens has water looking droplets in it. please help causing blue out line.

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Droplits are more than likey air. sound like a glycol leak on the blue tube. look for liquid underneghth the tube. THis would require replacement of blue tube.

Posted on Dec 10, 2008

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Replaced convergence ic's and picture is good but still no blue color to adjust in the convergence mode. the blue bulb is lit in back.


You may have pressed a wrong button when in service mode---it allows among other things to turn individual colors off like Blue--to make it easy to adjust red to green first.

Also take a look with set on into the Blue lens to make sure you have a image and it does not look like a blue flood light.

a last note: if you tampered with the lens (they have a wing nut on side that allows them to be turned you may have on the blue turned the lens so far there is no focus---for that lens--Did you?

May 30, 2012 | Samsung HCN4727W 47" Rear Projection...

3 Answers

Blue lines .


the convergence IC's are failing to perform properly...

you might need to replace them

Mar 26, 2008 | JVC AV-65WP74 Rear Projection Television

1 Answer

Red and fuzzy picture can you help on my 50 inch phillips magnavox projection TV


This is a very common failure on Projection TV sets.
Screen looks 3D
Colors don't line up
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed or warped.
The other common problem is cloudy lens fluid. After many years the coolant in the blue and green lens will become cloudy and cause the screen to look dull, red/orange, bright white, etc. You may even see halos around video.
You can see some example photos and find a solution here on Fixya.
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Nov 25, 2009 | Philips Magnavox 51MP392H Rear Projection...

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Green hazy lines across my projection tv screen


The coolant in between the CRT face and the focus lens has probably become discolored and would need to be drained, cleaned and refilled. The green CRT is the center one and it would have to be romoved in order to refill it.

Sep 20, 2009 | Philips 51PW9363 51" Rear Projection...

1 Answer

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...

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I was just given a samsung hcp4752wx/xaa. The


OK, Its always best to replace the lens assembly if its not preforming well. never dump the fluid. just replace the lens. As for the double images and the misalignment of the blue convergence line, this is caused by a faulty convergence chip that is located on the convergence board. you will need to replace this board in order to restore proper convergence performance.

May 16, 2009 | Samsung Projection Televisions

1 Answer

Vertical line on rear projection TV - Akai PT4298HD


this is an indication of a burnt crt. unfortunatly to fix this the crt will need to be replaced. such a repair is something i would recomend to a non tech. theres adjustment issues

Oct 30, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

My rear projection tv has a problem with convergence the blue lens is causing curved blue lines


Need the model number of your set. Its not the blue lens its the convergence ICs. Let me know your model number and I will assist you with this. Please reply to this same post when responding.

Jul 31, 2008 | Projection Televisions

1 Answer

Convergence not lining up


Sounds like the green is out of focus. If the focus control for the green does not control it enough to make the width the same as the red, then, the lens on top of the green can be adjusted to focus that tube. On the lens, there is a wing nut on a screw to loosen it and move the lens left or right a bit to help with the focus. Hope this helps.

Apr 15, 2007 | Mitsubishi WS-65315 65" Rear Projection...

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