Question about Samsung HCM553W 55" Rear Projection Television

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Auto focus problem

When I try the auto focus on my Samsung HCM553W tv, it says "No Sensor Data" and goes back to tv. The picture is not bad, this feature simply doesn't work. This problem started after the tuners had been replaced.

ISn't there a remote key sequence to manually focus the screen?


Posted by on

  • bbrewer57 Sep 14, 2008

    Am I able to do this myself?

  • bbrewer57 Sep 16, 2008

    I took the back off and cannot find anything unplugged. However I was able to get the Perfect Focus to work in 1080i on component two. The problem is the convergence won't hold. I can adjust it manually and it looks ok in 480p but looks bad in 1080i. The red gun is way off, twisted, in the upper right and lower left so there is no way to adjust it completely. Since we just upgraded to HD dish, I thought I would give 1080 a try.

    The perfect focus says "no sensor data" on video 1 (480p), component 1 and on the antenna. On component two in 480p, it says "not available". I can manually adjust the convergence and get a decent picture in 480.

    This tv is out of warranty now. The warranty company spent so much money on it that they replaced it with another tv and never picked this one up. We put it in the bedroom. I do not want the warranty repair people out again. Every time they fixed one thing, they broke something else so I will go with another service if it needs professional repair. I hate to spend a lot of money on it since it's been replaced under the lemon clause. Fixing the convergence again will cost around $300 if that's all it is.

    The last time he brought this tv back, the picture had "waves". Since the perfect focus didn't work, he re-aligned the screen by manually moving a screen full of plus signs into straight lines using the remote in much the same way as the manual convergence. I cannot find a key sequence to get back to this screen. I wonder if he screwed up the convergence when he moved this around manually?

    Thanks for all the help.



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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.

Posted on Sep 12, 2008

  • experttv
    experttv Sep 14, 2008

    If have a warranty from that company it would be best to call them back out, with my company if a customer opens the set we void their warranty.

    If you dont have a warranty with that comapny then you can open the back and see if you find a wire unpluged. If you find the wire then you need to make sure that you find the right plug that it goes into, if it can fit in more than one then you will need to send me pictures of the boards in the tv so i can show you where to plug it in at. Let me know if you need more info.

    Tim Nolan



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