Question about Panasonic PT-47WX42 47" Rear Projection Television

PT-47WX42 47 - Red color becomes prominent and screen goes blank when changing channels

My TV has started to act up lately. It is a Panasonic PT-47WX42 47 and we have had it for 5 yrs. When we turn it on, the red becomes very prominent., and sometimes when changing between channels,(especialy between analog and HDTV channels) the screen goes blank and comes back after a little while. The verizon fios screen menus which are blue, becomes darker and the whole screen is darker. Any help will be great.

1 Answer

The Knight

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Panasonic Master
76,584 Answers

Do a reset to this TV, and then check. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/

Posted on Jul 20, 2017

5 Related Answers

Anonymous

4 Answers

SOURCE: Picture doesn't work..Panasonic 47 inch TV PT-47WX42

Dood, if you really needed a new mother board for your TV the biggest problem on your hands would be finding the replacement. The motherboard is so easy to remove it would make you laugh. I think it has four clip bridges and four of five screws. You seperate the clip bridges, take the screws off and maybe take a picture of the cables so you remember where to plug them in and you're done. Like I said, take a snap shot so you dont forget where to put your cables back in.

Posted on Oct 24, 2007

Sonny Berry

8617 Answers

SOURCE: panasonic pt-53wx53g tries to turn on but goes right off

That is indicating that the convergence circuits have shutdown the set. You will need new Convergence ICs. They should be STK392-110 or STK392-120 either number works the 120 being the better chip. I will post a link where you can get the new ICs and they provide step by step instructions with pics so you can do the repair yourself. You will find your IC numbers under the section titled Convergence ICs just click on that and you will find your STK numbers.
http://servicemanuals.vstore.ca/

Posted on Mar 30, 2008

Anonymous

1847 Answers

SOURCE: 1080i

Can you explain the problem in more detail..

Posted on Aug 29, 2008

John Snow

788 Answers

SOURCE: I have a problem with my Tv pt-47wx42

Your symptoms sounds like a damaged convergence IC.

There are two and sometimes three very large IC’s that control the convergence in a big screen set. They are secured to a very large aluminum heat sink.

If your colors line up in the middle of the set and at the top but the picture is concave then you may have a faulty component in the pincushion circuit. When this circuit fails the picture will have an hourglass shape to it with black in the middle on the sides, or you will see square objects as hourglass shapes. If it is like you described and it is in the top and bottom, you may have a problem in the top and bottom pincushion circuit.

You stated that the charge will be $80.00 to diagnose this problem, I would ask if the diagnostic applies to the repair, if you choose to repair the set.
I have seen this type of repair run from $250.00 - $350.00.

If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon and it should only add the cost of the part to the repair.

I hope this information allows you to resolve this issue.
If I have helped you, please help me, and rate this suggestion the highest FixYa rating. (Two Thumbs Up)
Please Note: If you cannot rate this post with the highest rating, then please do not leave any rating. I am doing this for free and I do not think that any rating other that the best is needed.
If you need further assistance please comment to this post and I will try to help you further.

Posted on Jul 07, 2009

Anonymous

2 Answers

SOURCE: panasonic pt-50lc13 shutting off

i'm on my 3rd bulb in 5 yrs. i hate this tv. this time my bulb light didn't come on. instead the power light flashed green fast then went to red flashing after. i took out the bulb and it's blown!

Posted on Nov 13, 2009

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Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

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Common Symptoms include....

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Picture of a set that needs the fluid changed.

TV set after fluid change

SOLUTION

What you will need to do is replace the coolant and clean the crt. You can get a repair kit from TvRepairKits.com . It includes replacement coolant,step by step instructions, support, etc.

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ll projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

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Screen looks 3D
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TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.

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Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

TV set after fluid change

SOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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