Question about Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television

1 Answer

Blue color is out of position

I have gone into the service mode and can move all colors on the grid in all directions except for blue up and down. This problem came out of no where and now i have blue shadows around most letter at the top and bottom of the screen. The blue arcs up from the bottom of the screen and arcs down from the top. Again you can not adjust blue in the grid up and down. I have seen posts about changing the convergence board? Any thoughts?

Posted by on

  • demochief Feb 12, 2008

    This problem came out of no where i have blue shadows around most letters at the top and bottom of the screen. The blue arcs up from the bottom of the screen and arcs down from the top. Again you can not adjust blue in the grid up and down.

  • bolaklak Feb 20, 2008

    i have a hcm4216w samsung projection tv.. i have the same problem with the blue color on my tv..i can't adjust the blue on my manual convergence adjustment. i have replaced the convergence ic's but i still have the same problem..blue color is like a shadow on the screen, concave up and down.

×

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.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 4,402 Answers

Sure sounds like convergance problem
http://www.partstore.com/Part/Samsung/

Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929

Posted on Jan 30, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How do you get it out of 3d what do I adjust, its not a 3d tv


This is an color projector alignment issue. Many projection TVs have a menu item in the video or picture setup that will produce a grid overlay on a black screen of Red, Green and Blue. You use the <, >, up & down buttons on the remote or the TV to move each color (one at a time) directly on top of each other and maintain straight up and down / left and right lines. Once you do this, the picture will be in focus and there will be no more colored "3D-like" ghosting. If you are unable to move the colors far enough, there may be an issue with certain integrated circuits inside the TV that can be challenging to remove and replace. More make and model number for your TV would be required however.

May 21, 2014 | Televison & Video

1 Answer

How i adjust horizontal size and vertical size


To answer your concern, all you have to do is to change the setting of your aspect ratio on your TV.

Here is my suggested way to procede:


1. Apply 1080i signal, which should produce an oversized HD image on ColorStream1or 2.
2. Select an HD channel that is broadcasting standard 4:3 image, not wide screen.
3. Switch to the Service Mode ( Please refer to the above links). In the Service mode, press channel up/down to find the Adjustment parameters needed for the following steps.

4. Adjust HIT with volume up/down control for the image height to 22.5 inches.

6. Adjust WID for image width of 30 inches, (22.5*4/3)
7. Adjust HPOS to center the image.
8. Adjust PARA and TRAP to minimize geometric distortion.
9. Switch into Convergence mode and Adjust VLIN to get equally spaced horizontal grid lines.
10. Measure the length of the central grid lines and note the number of horizontal and vertical grid lines. This information is used to create an overlay grid.
11. Create the overlay grid on 40x25 x0.003 inch clear Acetate sheet, which you can get at the Art Supply store for under $2. Draw the grid with a fine line erasable pen. Draw vertical and horizontal lines through the center of the sheet so that the lengths are the same as the central grid lines. Now draw the grid so that it has the same number of lines as the convergence grid but are equally spaced, with the outer ones at the ends of the central lines.
12. Cut off about 1/4 inch from the right side of the sheet so that the sheet can lay flat against the screen, which is slightly less than 40 inches.
13. Put a reference mark on the TV frame 2.5 inches down from the upper left side of the screen.
14. Place the overlay on the screen so that the upper edge lines up with the reference mark. The overlay sticks by electrostatic attraction.
15. Use convergence controls to remove grid distortion and converge grid colors. Refer to the Anamorphic link for details.
16. Enjoy 1080i.

Other Comments:
I didn't realize I could create the overlay grid before placing the Acetate sheet on the TV screen, until I finished drawing the grid with the sheet placed on the screen. I added grid lines as called for in the procedure. I'm sure this method took much longer no only to draw the lines but some of them were difficult to see.

Part way through the convergence procedure, I became concerned that the image width was off since I did my screen adjustment with wide screen image. Thus, I decided to repeat that step with a 4:3 screen.

I confirmed the need to press 7 often to save results since after I adjusted one grid color without it, I accidentally hit a key that switched me out of convergence mode and when I switched back, all settings were gone.

Another mistake I made was not realizing that the cursor color determines which grid gets moved.


May 13, 2011 | Toshiba 32AV500U 32 in. LCD HDTV

1 Answer

White has turned pinkish


sounds like the linear adjustment is out of whack.....most projection type tvs, projection, lcd, plasma, have to be correctly aligned so that the color grids overlap each other to properly display the correct hue being created. you'd need the service code to re-adjust it, or have it serviced. also possible that one of the color grids is bad, but if you have all three (red,blue,green) colors showing on the entire screen area i would doubt it

Jul 24, 2009 | Vizio GV42L 42 in. LCD Television

1 Answer

I have 46ux13k hitachi tv and i need to know if there is atrick to adjusting the convergence.


Manual Convergence for the Hitachi. YOU WILL NEED ORIGINAL HITACHI REMOTE. NONE ELSE WILL DO
1. Receive an NTSC signal.
2. Press Magic Focus to begin magic focus
3. Press magic focus again during the magic focus process to get the “stop” screen.
4. While stop screen is up, press STATUS or INFO on the remote control (R/C) to bring you to DCAM mode and the service grid (64 point grid).
5. When you first get in here? I believe red is the selected color by default (it is flashing).
6. To choose other colors to converge, use the following buttons on the R/C:
· “STATUS” - Green
· “0” - Red
· “ANT” – Blue

ONE COLOR WILL NOT MOVE. YOU WILL NEED TO MOVE OTHER COLORS TO ALIGN TO IT.
7. Start from the center of the screen and work your way out on one color at a time. I adjusted red across the whole screen to match green. Then I switched to blue, and adjusted that to green as well. After you adjust blue, you
may want to go back and adjust some red again? etc. until the convergence looks good.

· Use 4, 6, 2, and 5 on the R/C to move the cursor position (dotted lines).
· Use thumb stick to move the convergence point color.


Then going along the lines and adjusting, you may run into the problem of getting an ‘S’ curve on the line. You’ll know if you get there. Basically, no matter what you do to adjust the line to be converged, the middle of the line between the points will not straighten out (it bends between the points). To fix this, the manual recommends going to the (7x5) mode which gives you less points to adjust. I had this problem, and the solution worked. There is also another mode (3x3) which gives you even less points. Basically, if the set looks good, you only fine tune it in (13x9) mode (64 point). If you have serious problems, the grids work as:
3x3 – ‘coarse’
7x5 – ‘medium’
13x9 – ‘fine’
10) To get to each of these patterns use the following on the R/C: (only if you need to)
1. (3x3) Press “STATUS” 5 times (only works when DCU is in uncorrected state)
2. (7x5) Press “0” 5 times
3. (13x9) Press “ANT” 5 times
11) If you adjust the 3x3, then you should go to the 7x5, and then the 13x9. You get the point… depending on where you start, work your way up, and always finish on the 13x9
12) When finishing up the 13x9 mode, to get additional ‘grids’ on the edges of the screen, press the PIP CH button on the remote control while in the digital convergence adjustment mode (DCAM). Fine tune the edge convergence as necessary. To exit, press PIP CH again.
13) When convergence is acceptable, press PIP MODE to write data to ROM memory. ROM WRITE? is displayed to alarm system that ROM will be overwritten with new data. Press the PIP MODE button again to write displayed data to ROM.
14) DATA WRITE TO ROM will take approximately 4 seconds and no picture will be displayed.
15) Green dots will be displayed when operation is completed.
16) Press MUTE to return to convergence pattern, then confirm again convergence is acceptable.
17) Turn power OFF.
18) Wait a few seconds. Turn the TV on, and you should have your normal signal. Press Magic Focus button just to make sure the magic focus still works (and that you did the last few steps properly)


Mar 21, 2009 | Hitachi 43FDX01B TV

1 Answer

Hitachi 50gx30B Pincushion problem


Please let me know in which direction the picture is distorted. Does it bow in from the top and bottom or left and right?

Thanks,
Dan

Mar 06, 2009 | Hitachi 50GX30B 50". Rear Projection...

1 Answer

My colors all of a sudden went out of wack


Is there an advanced convergence setup anywhere in the menu where the screen displays a grid? If so, you might want to get into that and move along the grid to each section that looks off. Adjust until the color falls behind the gridline, and move on to the next. It can be a time-consuming process, but should take care of your convergence issues.

Jan 20, 2009 | Toshiba 55H70 55" Rear Projection...

1 Answer

Setting convergence using service mode on the tv.


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.

42d3683.jpg

7859b01.jpg

e87380c.jpg
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.

Nov 23, 2008 | RCA P46920BL 46" Rear Projection...

1 Answer

Blurry screen KP61hs10


Yes, Convergence settings should be tried first before any color adjustment or any fluid changes are done. Remember that there are 3 colors to notice. Red, Green, Blue. The Green is the only one that you can not move with an adjustment The Red and Blue is ligned up on green. Some cases it does matter how linear the Green color is across the board, just how close you get the blue and red on top of green is what matters.

Mar 25, 2008 | Sony KP-61HS10 61" Rear Projection...

1 Answer

Colors out of alignment; curved lines


this sounds like a convergence issue.. one thing you are going to want is a good test dvd.. avia - guide to home theater or video essentials are two very good ones. anything that will supply you with test patterns and let you pause on them will work.

you will need to get into the service menu, using your remote press DISPLAY, 5, VOL+, POWER in quick sequence. once the screen comes up you should have green letters and numbers at the top of the screen. at this point, keys 1 and 4 change the item, keys 2 and 5 change the category, keys 3 and 6 change the value, mute enters write mode, enter executes it.

you will want a test pattern displayed that has a center point, enter the pje section of the menu and go to tphp, if you don't see a crosshair, press 6. you are going to want the convergence grid and the test pattern displayed simultaneously, so press 9 until both are on screen. it will be a crosshatch pattern overlaying your test image. use the joystick button (left or right) to roughly line the crosshatch up with your test image.

now go to tpvp and use the joystick (up and down) to finish lining things up. once you are happy with the changes, hit mute then enter to save it to memory.

this next part is from a tweaks file in the public domain that i have for this model and use any time i am working on one of these.

How to Enter the Convergence Mode
Once you're in the service menu, you need to access the convergence mode. Press the 2 or 5 key until you see PJE in white blocky letters (you should be able to get there quickly by pressing 5 once or twice). Now press 9 on the remote. You will see a bracket appear in the middle of the screen. Press 6 and cycle through the different types of patterns until you get a white grid on a black background.
Controls
Once in the convergence mode (activated by pressing 9 in the PJE section), the buttons on the remote work differently. Keys 1 and 4 move the cursor around on the grid (convergence points) in a spiraling fashion. The joystick on the remote will adjust the position of the current color at that grid point. Key 3 cycles between red, green, and blue adjustments.
You may also depress the joystick, which will allow you to move the bracket freely around the grid. Press it again and you are back to being able to adjust the position of the current color at that grid point. Handy if you are just touching up an area and don't want to spiral through all the points.
How to Converge the CRTs
It's much easier to converge the set if you can see what you're converging. Green should be the color to converge to. The geometry (straightness of the grid) of the green CRT should be good enough - If you notice that some lines are definitely out of whack, you should straighten them.
We need to disable the red and blue CRTs. Press 2 until you get to the 2150P-2 category. Cycle through the items until you get to RGBS. Change the value to 2 (Green CRT Only).
Move back to the PJE category by pressing 5. You should be back at the grid with a green bracket - If you don't see one, press 3 until you do (the bracket may have been set on red or blue, which have been turned off). Navigate around the grid, correcting any obvious errors. Once you're satisfied, turn the red CRT back on (RGBS value of 6, Red and Green CRTs on), and return to the grid. Press 3 until the crosshair is red. Now, align the red to the green, getting as close as you can. By the way, not all grid points are selectable. Keep in mind that the edges of the screen will tend to be more out of focus, and harder to get "tight". Get it as close as you can. You also may notice that some points affect the position of other, nearby points. You'll get the feel for it after a short period of time. Now, do the same for blue, making sure to turn off red (RGBS value of 3, Blue and Green CRTs on). When you're all done, turn all the CRT's back on (RGBS value of 7, All CRTs on), and look to see the results. Touch up where it is needed (if needed at all).
I found the 100 IRE Crosshatch image really showed areas that still needed convergence. I would cycle within the PJE category (pressing 6) between the convergence grid (to fix errors) and the 100 IRE Crosshatch image (to view areas with convergence problems).
Save your convergence to memory by pressing MUTE followed by ENTER.
Remember, you need to do this for each mode you use - This doesn't mean for each input. It applies to 4:3 mode, 16:9 mode, and 1080i 16:9 mode (even though 1080i is a 16:9 mode, it requires its own convergence due to the higher scan-rate). Each mode is separate, and is saved separate, however, each one does tend to affect the other slightly.
Try not to use the Flash Focus. I know it's very easy to use, and they put it right there on the front of the set, so it basically begs to get pressed. But realize that pressing Flash Focus will rely on the sensors to converge your set - It will pretty much re-do all your hard work. It may get close, but it will never be as good as a service mode convergence.
Now that your convergence is done, you should re-register your new convergence to Flash Focus (FF). Ryan says below don't use Flash Focus, and I agree. However, if you do or someone else does, it shouldn't require nearly as much touching up if the new convergence is re-registered to Flash Focus. This is simple to do. While in the PJE category, press the Flash Focus button to initiate a re-registration process to the system. If the operation fails (I've never had this happen), press 0, followed by ENTER to restore the convergence settings you last saved. You'll need to investigate why it did not work. In the PJE category, change to item ERR and it should read a value other than 000 if your attempt at re-registering FF didn't work. If our attempt at re-registering did work, it should read a value of 000. Typically, reasons why re-registering FF won't work are due to overscan being reduced too much but there are other reasons too. Regardless, while you are investigating just don't press FF and you'll be fine.
I have read numerous forums regarding re-registering flash focus. Most say only re-register flash focus in Full. This is what I did. I only watch TV in Full mode anyway, so it worked well. I have read many people having troubles with other modes if they re-register flash focus in Wide Zoom mode so I can only say, read forums and ask questions if you do use your set in other modes before you re-register your flash focus in another mode besides Full.


hope this helps you,
trin

Nov 15, 2007 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Toshiba 43H70 convergence


You will have to contact toshiba at 1-800-457-7777 and get a service manual to adjust the on board menu and adjustment.. I do not or ever ever recomend that an unexperienced person mess with the sets alighnments unless they have the service manual and understand all of the teminology as I've seen several sets that cost the customer 4 times what it would have if they didnt mess with the service menu and knock all the alighnments as this is not the time to adjust someting just to see what happens.

Apr 08, 2006 | Toshiba 43H70 43" Rear Projection...

Not finding what you are looking for?
Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television Logo

Related Topics:

167 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Televison & Video Experts

The Knight
The Knight

Level 3 Expert

72620 Answers

Henry  Thomas
Henry Thomas

Level 3 Expert

1074 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1667 Answers

Are you a Samsung Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...