Question about Panasonic PT-51HX41 51" Rear Projection Television

1 Answer

Convergence Help please.....?

Hi, quick question to all the experts on here. I read through this forum recently and determined what the issue was with my TV. I needed to replace the two IC Convergence Chips (think that is what they are called). Anyhow, I replaced them today and now setting the convergence on the tv. When I go into the tv settings (not service mode), the first convergence setting is a large green + sign. Is the goal of this setting to get the + in the middle of the TV? I took some string and made an X on my tv to find the middle. I then lined up the green + sign so the center of the + was on the center of the X (the string). After that, then I lined up the blue and red, and then went to convergence 2 settings and made all the + signs look as good as I could get. TV picture looks fine to me, but my guide through the cable box seems to have a little ghosting. Just wanted to make sure the first step is finding the center of your screen with the big green +.

Also, is there an easy way to determine if the lenses need adjusting. I did move the blue when I had the original blue convergence issue and noticed it will make the blue more blurry, or not so blurry. But is there a screen or some mode to put the tv in to adjust these lenses so I can be assured they are as crisp as they can get? This TV has been hauled from a few houses in the past and I just have to think they have shifted slightly.

Thanks for any help someone can provide. I appreciate this forum soooo much. Reading though here saved me several hundred dollars with diagnosing the two IC chips that needed replacing.

Posted by on

  • eric01mc Feb 05, 2008

    premtech... thanks so much for writing a response! Figured out where teh ghosting was coming from. Comcast Cable box.... glad you told me to drop that out of the picture. No ghosting on the text from the TV menu or DVD menu, but once I put that Comcast Cable box back in the loop, their online guide has ghosting on the text.

    Thanks for the help!

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 934 Answers

The collar adjustments on the top of the crt assembles are simply focus... If you have never removed the crt's it is HIGHLY unlikely you will need to rebalance the crt in your endeavor to set convergence....
Next - never, never, never use some intervention signal to set convergence... Did I get enough nevers in there... Hook up a dvd player or good vcr and start with that as a picture... Set yor collars if they need adjusting.. At this point, and from what you've described just readjust your blue collar back to what you had...
Next, go back into the multi-point convergence and check to make sure you have each quadrant set to as close as you want... Then bring the picture back up and re-check.. If there is any ghosting when you hook this back up to your sat box or cable guess where it's coming from.. You got it, garbage in - garbage out...
With the digital convergence on that unit there is no need to jig the set. (ie: use a string to find center...) Some set require an overlay but their multi-point isn't nearly as complex as that unit...
In short, if your colors align to a white cross you got it!!
Bill

Posted on Feb 03, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Convergence issue Blue not convering correctly, but the other colors do. The blue is warped at the top and bottom of the screen. Is this problem something that can be fixed?


Yes,the covergence ICs and precision resistors can be replaced to rebuild the area. A reputable shop may charge around $300 . If you are technical person,I can guide you further to do yourself!

Jun 04, 2010 | Toshiba 53HX71 53" Rear Projection...

5 Answers

Convergence problem???


yeppers..those chips are soldered(more like welded) into the board, and usually runs you around 300 to 400 buckos..

Mar 02, 2008 | Sony KP-65WS510 65" Rear Projection...

1 Answer

How do i fix the red color on my tv


Hi my name is Roety,
I can help you with your issue ,
Most likey you need the convergence ICs replaced.
A repairman would charge about $350 to replace them
Voltage checks and a visual would be needed to determine exactly what is bad in your TV
 
 
If I have helped you with your issue please click accept.
If you have more questions you can still respond until this post expires,
I will reply asap
Thanks

Nov 20, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Rca d52w20 convergence aspec ratio and sound problem


Did you replace small fuse beside fly back?. resolder fly back pins. Maybe liquid coolant alround chassis or yokes.

Apr 05, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Could use more help


you will need the convergence power supply to repair the issue if its all three colors out of alignment. Leave these people a email with your model number and symptoms, they are RCA experts and will be able to help you get exactly what you need
http://servicemanuals.vstore.ca/

Sep 04, 2008 | Projection Televisions

4 Answers

Black pop-up screen when pressing any menu features on remote


check for closed captioning. make sure it's set to off.


C-Dog

Feb 03, 2008 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Convergence


http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Nov 23, 2007 | Toshiba 50H72 50" Rear Projection...

1 Answer

Toshiba 57H82 Convergence issue


more info here:

http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

May 05, 2007 | Toshiba 65H82 65" Rear Projection...

1 Answer

I need help please...


You will need to replace the convergence output IC's and check the resistors in that circuit.

Apr 12, 2007 | Panasonic PT-56HX41 56" Rear Projection...

2 Answers

Toshiba model 61HX70 convergence issue


It is a good possibility you damaged something on that PCB that had the IC's, I like to use an upgraded chip the STK394-160e that is designed for HD signal stresses. I dont know why they ordered the convergence board but I suspect it would have been ok, there are also 2 jumpers that need soldering JW10 and JW50 that supply power to the chips and they REQUIRE resoldering or it will fail again. Might try reseating the RED CRT board, check for cables that you may have unhooked to see if they are not seated in their sockets properly, double check every wire you unhooked, Make sure you used a Silicone Heatsink Compound on to the back of the IC's. I dont know what all you unhooked, but check the wires going between the CRT Boards. Check for cracks in the boards to make sure they werent flexed to much. Good Luck.

Sep 09, 2006 | Toshiba 61HX70 61" Rear Projection...

Not finding what you are looking for?
Panasonic PT-51HX41 51" Rear Projection Television Logo

91 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

Josh Whitehead
Josh Whitehead

Level 3 Expert

1146 Answers

The Knight
The Knight

Level 3 Expert

68368 Answers

Are you a Panasonic Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...