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AUTO FOCUS NOT WORKING - Samsung Televison & Video

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  • tncplumbing Jun 22, 2008

    did that still not a clear pic

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  • Samsung Master
  • 8,617 Answers

Your convergence amp ICs are needing replavement. Please respond to this response with your model number and I can post the STK numbers for your set as well as where you can get replacements with instalation instructions

Posted on Jun 22, 2008

  • Sonny Berry
    Sonny Berry Jun 22, 2008

    check the convergence resistors its not uncommon for some to be open when the origional ICs failed.

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Is there a way to manually adjust the convergence on a Hitachi HDTV modol #43FDX15B?


Hi James,

If Auto Focus (Auto Convergence) won't complete the set-up stop trying to adjust it. There is a fault in the convergence circuit!! ICs have to be replaced and maybe some burnt resistors.

If you access the service set-up menu and try to adjust the "defective" circuit the Auto-focus may not work correctly after the IC's, etc are replaced. Experienced technicians know that the service menu allow easy resetting to correct the misalignment, etc. "First Time" technician can be easily misled, waste a lot of effort and never get a correct picture.

If you want to attempt the repair, buy the correct parts from a service guy that does this type of work. I suggest having the repair done by a local competent technician that is experienced with Hitachi Convergence Problems. It is considerably more challenging than changing a fuse.

Our Convergence Gallery shows a variety of Convergence Faults. If you live in Toronto, ON., Calgary, AB., or Vancouver BC. it costs $257 for Hitachi in home convergence repair.

Good luck.

Robert

Nov 17, 2015 | Hitachi Televison & Video

1 Answer

Magic focus not working colors not aligning


If Magic focus will not correct it (it is the limited auto convergence for this set) both the convergence chips which should be stk392-110 or 150 will have to be replaced, convergence is done with the original remote with set in the Decam ( tech convergence mode).

The parts are not that expensive and TVrpairparts.com sells kits with instructions for these sets by model number.

Dec 10, 2012 | Hitachi 51S500 51" Rear Projection...

1 Answer

Sony kp-57hw40 double picture. regular and the other right next to it is red. tried auto focus and nothing happens. while holding auto focus btton down get red cross and white next to it. tv is 9 years...


Auto Focus button no longer work.Tv have a problems known as a convergence problems,it dead.Tv have colors lnes R,G,B mis alignment,have colors shadows pictures or 3D pictures look alike.The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts,must be replaced on the tv convergnce board to solved the tv pictures convergence problems.The shop,will cost u like $300-350 for parts and labors.

Nov 13, 2010 | Sony KP-57HW40 57" Rear Projection...

1 Answer

Toshiba TV Model 42H81 will not focus


Ur convergence it dead.Buy the kit and replace the ICS an the resister.Focus don't go that far.

Aug 11, 2009 | Toshiba 42H81 42" Rear Projection...

1 Answer

Replaced stk's but I still can't move the red vertically


Did you replace both the convergence ICs ?
The auto-focus won't work properly until BOTH Convergence amps are replaced .
Also you need to replace various resistors along with it .

Feb 25, 2009 | Toshiba 50H81 50" Rear Projection...

1 Answer

Auto focus problem


The auto focus is not actually focusing the tv. When it is running it is adjusting the convergence. Most likely the repairman that replaced your tuner didn't plug the sensor wires back in. I would call him back out and have him hook it back up.

There should be a convergence menu in the tv. Use the samsung remote and go into the menu and look for convergence.

Sep 11, 2008 | Samsung HCM553W 55" Rear Projection...

1 Answer

Out of focus


Most times when the stk's are shorted the 5 amp cp fuse on the power supply opens. Check all of the cp's by the stk's and on the power supply.

Feb 26, 2008 | Sony KP-51WS510 51" Rear Projection...

1 Answer

Samsung rear projection tv has multiple images with differnet colors


The auto self focus screws up if the picture does not remain constant or close to it while focusing. It is designed to self focus every fifteen minutes. Go to menu and then setup and turn the auto focus feature off. I have had mine off for the past year and have had no problems. If you slide the bottom portion of the remote down you will see a self focus button. My suggestion is to put a DVD in and hit the pause button during a scene and then hit the self focus button. It should align back up and may take a couple of tries. (If you have an aftermarket remote, just enter the menu and then setup and you can activate the self focus feature, just don't turn it to auto focus!)

Dec 31, 2007 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Auto Focus not working.


I think your having convergance problems.

http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Oct 28, 2007 | Akai PT5598HD 55" Rear Projection...

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