Question about Pioneer SD-P50A5-K 50" Rear Projection Television

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Can not adjust convergence to align red in bottom left corner. How do I fix?

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If you have done all the manual interventions then ther is a problem on the board itself. Unfortunately all 3 boards should be changed. Really this is not a DIY as so many others have found out the hard way. You need knowledge of voltage values special tools and skills to install and tune the new boards in.

I do not recommend a DIY for this problem as it ends up costing 2 times or more the amount of having it done properly by a professional the first time
This problem does not tolerate board swapping jockey tactics like a pC might. It is far more complex
to set up and repair
Please rate my help++++Thanks for using FIXYA

Posted on Nov 20, 2009

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Posted on Jan 02, 2017

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1 Answer

Yellow arch on bottom left of screen


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*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

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Sep 30, 2009 | Toshiba 43H70 43" Rear Projection...

2 Answers

Convergence Problem


Unfortunately you will have to replace the convergence board in this unit. it has failed. this particular board regulates the alignment procedure that you are having issues with. replacing this board will fix this issue.

May 21, 2009 | Mitsubishi VS-5047 50" Rear Projection...

1 Answer

RCA D52W23 convergence problem


If you cannot adjust it with customer menu u need professional. May need service adjustments.

Apr 08, 2009 | RCA D52W23 52" HDTV CRT TV

1 Answer

Hitachi 50FX20B 50 inch: Blue Convergence --will not adjust


You need to change convergence amplifiers. Should be no problem for a professional

Apr 08, 2009 | Hitachi 50FX20B 50" Rear Projection...

1 Answer

Bowed flickering green screen, black on bottom


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 projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • 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. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Jan 25, 2009 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Red is out of alignment


when i go to convergence and align the white cross with the blue its ok ,but when i try the red it doesnt line up and if l get it close enough it get misaligned only with the red ,green and blue fine

Nov 15, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Convergence issue


try fixing the convergence 2 after your've aligned the convergence 1 - the second (accessed via the set up control) let's you adjust on 9 different axis to align the red and blue tubes to the green. you select which + sign you want to adust by pressing the corresponding number for the + ie 1 for the top left, and 9 for the lower right corner.

good luck (note - you cant change the green only the red and blue, if the whole edge is a mess try moving the image (you need to be in zoom mode, and then access the position adjustment via the pitcure set up screen.

Nov 05, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

51mp392h Blue Convergence Problem


Hello rogeuryder,

This is the one thing that even make TV repair persons shudder. You don't really have a convergence problem in the normal sense. The convergence works. What you have is a misaligned convergence situation which any documentation and or book on TV repair will tell you that at this point manual convergence adjustment is needed and the only thing you will have to do is keep trying to adjust the convergence until you get the center aligned, and then work towards the outer edges using both static (Center) and dynamic (outer edges) convergence techniques.

As this may sound it is; Very Very Tedious.

Here is something that may help you:

http://books.google.com/books?id=ttBofTJM7FEC&pg=PA112&lpg=PA112&dq=static+convergence&source=web&ots=hyUMeeY9s6&sig=DZm27q1aMbLiwKA__fyysBd2yUE&hl=en&sa=X&oi=book_result&resnum=9&ct=result#PPA112,M1

I have used this book when I use to teach TV repair. I hope you discover what I am tried to convey in my e-mail, this is no longer a question of can you fix a TV? It has become a question of do you have the patience to adjust a TV.

Good fortune in doing this, you will succeed if you just take your time and do static convergence first and then do the dynamic convergence with the manual controls. The procedure will be in the service manual.

I hope this helps

Thank you,

Shuttle83

Jul 25, 2008 | Philips Magnavox 51MP392H Rear Projection...

2 Answers

Convergence


u could try changing the convergence ic if that is not it then u have to go in to the back door of the eprom to set but i think pansonice u need a service remote to get in. i hope this will hp marty

Jul 17, 2008 | Panasonic PT-51HX41 51" Rear Projection...

1 Answer

Converge problem


Sounds like convergence issue--replace Stk IC's mounted

on large heat sinks. Check power supply for open fuse device.

Re-check convergence alignment.

Aug 11, 2007 | Philips 60PP9352 60" Rear Projection...

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