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I have a blue screen with horizontal lines

I own a Panasonic PT-47WX49E. I have a blue screen with horizontal lines appearing. How do I fix this issue? Is it a convergence problem?

mbrow468 Nov 13, 2009

When I was researching this issue online I was led to believe this problem was due to the convergence. After talking to a tech with a parts company he said it may be the drive board at the base of the circuit on the bulb (or tube).

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Colin Stickland

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Posted on Nov 13, 2009

Colin Stickland

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I think that the cost of repair is more than a new flat screen tv ,sounds like the scan coil output has burnt out ,well it was called scan output in a valve tv of old .This fault would be caused by a picture valve or the high tension output for the scan coil.Ok iam showing my age yes?? but the problem is the same just the technical names have changed.

Colin Stickland Nov 13, 2009

As i stated i dont know how this type of thing operates compared with an old valve set,iam just a dinasaur because the technology has by-passed me and i havent kept up.but yes that circuit is driving the output for the picture so we can assume that the tech guy knows as well .Now the whats the cost of the part and the labour involved in changing it,is it viable to repair when the lcd tv have dropped in price and they digital terrestal tv tuners built in .They can run off of a computer so you download a torrent film and not have to bother burning to a dvd or memory stick .Just plug computer in and watch the film ,here in spain a 32inch is now about 300euros so before you repair think about it closely

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The color goes out on my panasonic PT-47WX49E TV.

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

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.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

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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.
TV shuts off after powering on. The power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.

SOLUTION #1

What you will need to do is convergence. You can get a repair kit from TvRepairKits.com . It includes replacement parts,step by step instructions, support, etc.

Common Problem #2) CRT Fluid is Cloudy

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

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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You need the panasonic convergence repair kit #1 which comes with instructions with pictures. Heres a link to the correct kit for your model.
http://servicemanuals.vstore.ca/product_info.php/pName/panasonic-projection-tv-convergence-repair-kit-1/cName/convergence-repair-kits

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Service manual for PT-47WX49E

i need the service manual as well, if possible (i'm just having a red horizontal convergence issue).

also, any advice on what to do would be swell!

my email is v6vywa002 [at] sneakemail [dot] com

thanks!!

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http://servicemanuals.vstore.ca/

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