Question about Samsung HCM4216W 42" Rear Projection Television

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Samsung 42" HCM4216W Dim Horizontal line across screen

I have about a 3 inch wide horizontal line across my screen. It does not show up in the same place everytime. It is not a solid color just dimmer than the rest of the picture. The line is more noticeable on the regular channels and hardly noticebale at all on the High Def channels. I am noticing a second line start to form on some channels depending on how bright the background is.

I have replaced the convergence board in this 3.5 year old set once before but that was about a year ago. No problems until now. I was thinking of ordering new STK392 chips and replacing them on the old convergence board and try to replace that board again inside the TV. Does this logic sound good or am I off base with this problem.

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THIS HAS NOTHING TO DO WITH CONVERGENCE or any of the stk integrated circuits.There are few capacitors close to the vertical output ic, they are usually blue or red (could be 1000uf 50volts for e.g.)That where the problem is

Posted on Dec 27, 2007


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