Question about Hitachi 53UWX10B 53" Rear Projection Television

2 Answers

Akai/Samsung PT4299HD Convergence Problem

In the service convergence mode, I can line up everything but red. The red would adjust at first, but not much. Now when I enter the service mode the red lines come on, then fade and disappear.

Should I replace the convergence board (Samsung BP95-00415C) or should I be working on the ICs STK394-250 (B4F17 and B4F19 on top of ICs)? If it is the ICs what fuses should I be replacing also? I'd rather not replace the enitre board >.< I'm a poor college student.
I can email the service manual with circuit diagrams if needed.

Thanks!

Posted by on

  • 3 more comments 
  • snttgc Feb 13, 2009

    Are the ics the exact same part for both? Just different inputs for the different colors?

  • snttgc Feb 14, 2009

    ok... I ordered 2 ICs. re soldering didn't help, so hopefully just replacing them will fix it. The fuses and resistors look good, so I guess we'll see how it goes in a few days!
    Thanks for your fast response!


  • snttgc Feb 15, 2009

    One more question before the ICs get here. If I missed a fuse or resistor that's gone bad (I don't think there are any, the tv powers up and works fine, and I didn't see any problems when I tested them) and I install the new ICs, would the blown fuse/resistor cause the IC to be damaged upon power up? I'm going to double check them, but just in case...

  • Anonymous Feb 22, 2009

    Replacing the ICs helped some. The red is back, but the convergence is still off. In factory convergence mode, when I push 1 they're all off, bowed towards the middle. When I press 2 only the red is off. The red still won't adjust. :(
    The red is crisp, while the other colors look fuzzy. I've also gone into the service menu and made sure everything was at the original value.

  • snttgc Mar 05, 2009

    Fixed!!
    I replaced the ICs and fuses. Then something else on the board blew and the tv wouldn't come on at all.
    So I decided to replace the entire board.
    Samsung BP94-01289A ASSY PCB MISC-PWR DEF;DP, HCP424
    Found it on ebay for $110 after shipping.

    Don't order this from partstore.com. They kept backordering it... I canceled my order, and found this one cheaper anyways.

    Before replacing make sure everything in service menu is at original values.

    I
    still had to fiddle with the manual convergence to get the colors
    right. In the regular menu, disable auto perfect focus. It's worthless.

    Since I had to look everywhere to find all the info I needed here's a summary of what I did.


    1. Try to align convergence manually (mute-1-8-3) *don't
      hold down mute, just press them in succession* Do red first, then blue,
      then green. Work from the center out. Mute the colors you are not
      lining up! Makes life easier.

    2. Don't fiddle with service menu if you don't have to.
      Don't do it without the service manual at all!! You can seriously screw
      yourself over. If you need it, google 4226samsung.pdf.

    3. IIF THE CONVERGENCE WON'T ADJUST in the service
      convergence mode, just replace the entire board. It'll save you time
      and frustration. No special tools needed.

    4. Don't open a tv unless it has been *UNPLUGGED* for
      several days at least. Capacitors stay charged for a long time, and tv
      capacitors carry a very dangerous amperage range. It's enough to do
      serious damage! Mine had been unplugged for 3 days, and I still got a
      tiny shock from bumping a screwdriver somewhere it didn't belong.
    Total money in TV $190. Not bad for a 42 in HDTV!!

    If anybody needs help, feel free to email me
    snttgc @ mst . edu
    I don't know a lot, but I can tell you what I tried, and what worked for me!

    Thanks to everybody who helped me!! My new TV is gorgeous!

    *better link to picture for service convergence controls:
    http://img105.imageshack.us/img105/3618/...


×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

There is a defaut I c drive how can i fix that

Posted on Feb 25, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,234 Answers

Try resoldering the pins on the ICs first. If that fails to resolve the problem, change the IC responsible for RED. You should be able to determine that from the service manual. In that area you should also see either fuses or low valued resistors that feed the STKs. Check those as well.

Let me know if you need further info.

Dan

Posted on Feb 13, 2009

  • ABRsvcs Feb 14, 2009

    Yep, the ICs are the same. There should be 2 ICs.



    Dan

  • ABRsvcs Mar 05, 2009

    Sorry that just the ICs didn't fix it. But, I'm glad you were able to finally resolve the problem. It is not unusual for the ICs to not cure the entire problem. IT sounds like the ICs failed AFTER something else.



    Enjoy the set!!



    Dan

×

1 Suggested Answer

ladywinn
  • 5138 Answers

SOURCE: Akai/Samsung PT4299HD Convergence Problem

Ck 3 low ohm resistors 2.7 ohms they will be on same board as ICs.

Posted on Feb 15, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Red and blue pic adjustments areso out of adjustment how can i get them back


Convergence board is dead.Go to Tv repair World.com buy a new convergence board replaced the board will solved ur problems.Samsung/Akai use same convergence board.

Jan 22, 2010 | Akai PTH5498 54" Rear Projection...

1 Answer

"Perfect Focus" problem on Samsung HCN4727W


You have a bad sensor, a bad digital convergence board, or the new board is not working correctly. I would start by swaping out the convergence board or exchange it for another one. Good Luck

Nov 08, 2007 | Projection Televisions

1 Answer

Red, Green convergence lines are wavy


Projection TV sets have two very common problems listed below.

Problem #1) 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
*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 http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Sep 16, 2009 | Akai PT4298HD Rear Projection Television

2 Answers

RED CONVERGENCE SCREEN PATTERN BOWING AND CAN'T ADJUST


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.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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

1 Answer

Akai/Samsung PT4299HD Convergence Problem


Ck 3 low ohm resistors 2.7 ohms they will be on same board as ICs.

Feb 13, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

Samsung HDTV 1080I-Model#HCP4363W-Convergence Problem


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. 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, Zenith, and others. You can get a convergenece repair kit wiith 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 - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV 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 here
bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jan 21, 2009 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Convergence


youre convergence ICs need to be replaced there are two of them STK392-040 you can get new replacement ICs and free instructions with pictures at the following link.
http://servicemanuals.vstore.ca/

Jun 05, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

Akai PT 4299HD picture shift


Sounds like you got it ! Note for the future....if you change
convergence amp IC's...be sure to use top quality name brand
only....no generics ! I use Panasonic with no re-calls.......T.

Feb 18, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

AKAI PT55


The green convergence can only be adjusted through the service menu

Feb 10, 2008 | Samsung HCN4226W 42" Rear Projection...

Not finding what you are looking for?
Hitachi 53UWX10B 53" Rear Projection Television Logo

Related Topics:

988 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hitachi Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

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

Answer questions

Manuals & User Guides

Loading...