Question about Panasonic PT-51HX40 51" Rear Projection Television

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Panasonic pt51hx40b the picture at the bottom about 8 inches up and it goes to the middle of the is like the convergence is is like 3d you see lite green and pink.the top right hand corner bit not quite as bad only about 4 inches.any help would be appreciated. Thanks Spaceace

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Re: panasonic pt51hx40b

If the bottom 8 inches of the screen is black then you likely have a failed part in the vertical output circuits. If you can still see video clear to the bottom, then your convergence IC's (IC7001 and 7002) may have taken a dump on you. Worst case would be a failure in one or more of the 3 yokes in the set that attach to the CRT's. If the sets less than 10 years old, it may be worth repairing. Otherwise, a nice NEW HDTV would be in order.

Posted on Jan 03, 2007

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We have a Hitachi 53udx10b tv. Recently it was

Projection sets have two very common problems.

The first common problem is convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya

Dec 05, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Fuzzy picture

never adjust the tubes themselves( No-NO) these are affixed to the chasis in one position and not to be moved. no adjustments should ever be attempted to anything directly attached to the tubes. this will throw off centering, soft-focus, & convergence alignments. it can be corrected but a huge burr on the bottom of the foot! what you have are faulty convergence ic's and maybe sme low-ohm resistors that are bad. repair in-home should not exceed 350.00. parts and labor. mch

Mar 09, 2009 | Panasonic PT-53TW53 53" Rear Projection...

3 Answers

Panasonic PT-53WX54 curved bottom

its the problem of convergence in the unit that needs to be repaired
for how to repair please click the above link

Oct 06, 2008 | Panasonic PT-53WX54 53" Rear Projection...

3 Answers

Panasonic 47 inch Projection tv PT-53WX42F

Sounds like your convergence chips are going. Unless you are real handy with soldering iron I would suggest having a tv repair shop service it(probably cost $200-300). If you are handy then I believe the chips you need are Sanyo STK392-110. There should be 2 of them. be careful if you order them online, there are lots of chinese knock-offs out there.

Apr 19, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Convergence problem

The convergence ICs are located on the left board on a huge heatsink they should be STK392-110 or STK392-120. You can get replacement ICs at the following link and they also provide free step by step instructions on how to remove and install the new ICs.

Mar 29, 2008 | Philips 60PP9202 60" Rear Projection...

1 Answer


You need sevice code to enter convergence.

Mar 27, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Hitachi 50ux26b/27k with AP63 chassie convergence problem

It looks like the STK chips need to be replace for fix the distorted colors.
You can download the service manual from here:

Feb 05, 2008 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

Panasonic- 47wx42f

the convergence ic's are at fault need replacing,call a service shop and ask for estimate to repair .should be under $ 300.

Dec 09, 2007 | Panasonic PT-47WX42 47" Rear Projection...

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Green and red color problem on bottom left to a little past the middle of the bottom of screen

the convergence ic's are breaking down and require replacement should cost under $ 250 depending on your service shop.

Nov 18, 2007 | Panasonic PT-51HX41 51" Rear Projection...

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