Question about Philips Magnavox 51MP392H Rear Projection Television

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Green crt arcs ,no picture, sound ok

Green crt arcs then will not light.the red and blue crt light,but the screen stays black

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  • 34 Answers

You either need a new bulb or your bulb is not installed correctly

Posted on Oct 06, 2009

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Posted on Jan 02, 2017

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Why does my tv have one blue, one red and one green line at the top of the screen but no picture?


The CRT inside the TV has gone bad. You can either find the make and model of the CRT and replace it, or get rid of the tv and buy another one.

Jun 08, 2012 | Televison & Video

1 Answer

My mitsubishi vs 6047 has been in unheated storage for about 4 years. now picture is very blury. when words are on screen large letters are legible with small white horizontal lines dancing side to side....


Does the picture look like this?

dcramer531_118.jpg
If so I believe your CRT liquid coolant has gone bad and needs replaced.
How to diagnose bad CRT Coolant:

Note: This problem will only affect the GREEN and BLUE picture tubes. The RED CRT is never affected, because the wavelength of the red light does not promote this algae growth
General Symptoms: Washed out, blurry picture, red portions mostly OK, GREEN images have halos, BLUE portions of images may have halos or be missing entirely.Turn the color level control all of the way down and remove the screen and/or the cabinet that contains the mirror. (different for different models) Do not turn the set off or the color level control will reset to preset levels. Look directly into the picture tube lens while the set is on. First look at the RED CRT. Observe the scan lines in the picture. These same lines should also be present in the green and blue picture tubes.
After looking at the RED CRT for comparison, look into the GREEN or BLUE CRTs. If it is contaminated, it will look like there is a layer of film that you have to look thru to see the picture. There may also be swirls and other various contaminates forming. If it is not as clear and sharp as the RED CRT, it is contaminated, and you should change the coolant fluid. IF you wish to tackle this I will supply more information and instructions. This task is medium to hard for non trained people.
Let me know if you wish to get the instructions on changing the fluid.



Jun 09, 2011 | Mitsubishi VS-6047 60" Rear Projection...

1 Answer

I have a hitachi rptv model #43FWX20B and the picture has a red tint to it. Opened back up and red green and blue bulbs light up. red bulb stays bright while blue and green go dim to bright as tv plays....


Howdy;
Since you don't have any white lines with the red screen/picture I would say that the red bulb (CRT) is conducting too much. There is an adjustment control for that. The 'sceen' control is behind the speaker cover and service cover. Turn red screen control slightly to the left until you get a good black and white picture.

Good Luck, Big Irish.

Nov 22, 2009 | Hitachi 43FWX20B 43" Rear Projection...

1 Answer

CRT problem


you need to adjust the red screen control of the crt under the speaker grill turn it down with the tv running.

Mar 02, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

No Picture & No sound. Red LED, Green LED, Red LED.


If the power supply outputs are good! Then I would say the back light inverter is bad! If the screen stays black and does not come on.

Jan 14, 2009 | Akai LCT2660 26 in. HD-Ready LCD...

1 Answer

D52W20 circuit board


The center circuit board is the green CRT drive circuit. that board could be bad or the green CRT could be faulty. I have access to both those parts for your model

Jul 12, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

Blue screen of death on a tv??


this could be three differnt things

1. the crt itself could be bad

2.the vertical ic on the crt board

3. the focus pack or focus block

Sep 19, 2007 | Sony KP-53V45 53" Rear Projection...

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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