Question about Samsung HCM553W 55" Rear Projection Television
My tv was fine Samsung 1080i model now it's all out of focus and looks like inverted horse shoe big on edges and narrows to the middle? have no idea what happened it was working fine. perfect focus says No Sensor data?
There will be two big Audio Amplifiers on the convergence board, they will say STK382 or some such STK number on them. Look for burned connections on the bottom of them and resolder any suspect connections before anything else. If that doesn't work, get an ohm meter across the various outputs and look for one of them with vastly different readings than the others and change the chip with the funky readings. Lastly look for the connection to the edge sensors on the sides of the screen about half way up. If that wire is disconnected it will give a very bad picture that is very similar to what you are describing.
Posted on Dec 10, 2009
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Posted on Jan 02, 2017
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