Question about Samsung HC-R4755W 47" HDTV

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HC R4755w Convergence adjustment

I have a problem with the manual adjustment on the blue adjustment. I can adjust the red convergence left and right and up and down , but the blue will adjust up and down only not let and right. the blue convergence is off at least and inch and my picture looks like crap. the auto adjust does help either. is there a way to adjust this inside the unit?

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Re: HC R4755w Convergence adjustment

From the symptoms you describe it would apear that maybe one of your amps might be bad... However since you can move it one way then it might be a resistor bad. in convergence cuircit that would be my first choice.

Posted on Dec 21, 2007

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I have a Philips 51PW9303 Rear Projection TV that had blue shadows around the sides of the screen and now has a green and red bowed line at bottom. Does I need a convergence board to solve this?

If the following doesn't work the tubes could be at the end of life:
Adjusting convergence:
Note: For best results, the Projection TV needs to be turned on for 15 minutes or longer before adjusting the picture tubes (convergence).

To adjust the convergence of the picture tubes:
  1. Press the 'MENU/SELECT' button on the remote.
  2. Press CURSOR RIGHT to enter the PICTURE menu.
  3. Use CURSOR DOWN and RIGHT to select and enter MANUAL CONVERGE.
  4. Press CURSOR RIGHT to select CONVERGE RED or press CURSOR RIGHT and DOWN to select CONVERGE BLUE.
  5. A crosshair will be shown on the screen. If there is any red or blue fringe around the crosshair, use CURSOR RIGHT, LEFT, UP, DOWN to try and merge the fringe colors with the crosshair.
  6. Press the 'MENU/SELECT' button to return to MANUAL CONVERGE menu.
  7. Press the 'EXIT' button to exit the menu.
If you are satisfied with the convergence you may stop now. Otherwise, you can continue and adjust the convergence more using mult ipoint convergence.
To Adjust multipoint convergence:
  1. Press the 'MENU/SELECT' button on the remote.
  2. Use CURSOR RIGHT to enter the PICTURE menu.
  3. Use CURSOR DOWN and RIGHT on the cursor ring to select and enter MANUAL CONVERGE.
  4. Press CURSOR RIGHT and DOWN on the cursor ring to select MULTIPOINT RED or MULTIPOINT BLUE.
  5. A grid of crosshairs will appear on the screen. If there is any red or blue fringe around any of them, press CURSOR RIGHT to enter NAVIGATE mode.
  6. Use CURSOR RIGHT, LEFT, UP, and DOWN to move to a crosshair that has a color outline.
  7. Press the 'EXIT' button to enter ADJUST mode.
  8. Use CURSOR RIGHT, LEFT, UP, and DOWN to merge the color with the crosshair.
  9. Press the 'STATUS/EXIT' button to return to NAVIGATE mode. Repeat as necessary.
  10. Press the 'MENU' button to return to the MANUAL CONVERGE menu.
  11. Press CURSOR DOWN until SAVE MULTIPOINT is selected.
  12. Press CURSOR RIGHT to save the multipoint settings.
  13. Press the 'EXIT' button to exit the menu.

Apr 03, 2010 | Philips 51PW9303 51" Rear Projection...

1 Answer

My convergence wont adjust on the blue and have no blue in screen

This is a common problem. Its called a convergence failure.

Problem #1) Convergence


  • Screen Looks 3D2_bing.gif
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...


Feb 20, 2010 | Samsung HC-R4755W 47" HDTV

2 Answers

I have a Philips 46PP9302 and can't find the Quick Setup guide. I'm wondering if it is located on-line. We moved our tv and want to recalibrate it.

The above link should take you to the location where you can view all the parts of your models manual. Select the area of interest and rad onlinje

Please rate my help++++Thanks for using FIXYA

Nov 24, 2009 | Philips 46PP9302 46" Rear Projection...

2 Answers

Blue convergence wont work

This is a common problem. Your convergence has gone out.

Common symptoms are...

1) 3D Video
2) Warped Video
3) Convergence menu does not adjust the red or blue correctly. 4) TV Chirps

Go here for a solution...

Sep 05, 2009 | Panasonic PT-47WX49 47" Rear Projection...

2 Answers


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,Pioneer 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

Jun 13, 2009 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Picture is blurred

If it's a projection tv, setting the convergence is normal and necessary sometimes. Go to the menu setup. You should find an option in there for setting the convergence. It's basically just lining up the cross-hairs (+) of all 3 colors so the picture is not so blurry. Just make sure you set all of them that you see on the screen. They all should be sitting on top of each other. Hope this helped you.

May 24, 2009 | Samsung HC-R4755W 47" HDTV

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

Convergence Problem and Contrast Adjustment

Have you checked all of the resistors inthe convergence circuit as well? If not, check them for the correct impedance.. Remember, you have to pull one side of the resistor out of circuit to measure it correctly. 
If all of the resistors are good, then you have to do a coarse convergence adjustment on the set through the service menu.. if you need the service manual for the convergence directions, I have one uploaded in the technicians corner of

Dec 25, 2008 | Projection Televisions

1 Answer

Tilted Screen

Yes, there is a tilt adjust,but you should have service manual to guide requires some diassembly / access in back of set.....................T.

Dec 20, 2007 | Samsung HC-R4755W 47" HDTV

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