Question about Hitachi CMP4201U 42 in. HD-Ready Plasma Television

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Black line down the center of screen

I have a black line down the center of the screen of my Hitachi Plasma TV. The line comes and goes.....

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Re: Black line down the center of screen

I had the same problem to and I fixed it.
At the bottom of the plasma there are six or seven ribbon cabbles that come out of the panel and connect to like driver boards. Each ribbon drives that section of the panel. Mine had it down the centre so I unplugged that ribbon cable and on the underside of a metal plate attached to it there are four big resistors and four small ones. The big ones labelled 100 required resoldering. Once they were resoldered it worked just fine.

Posted on Sep 24, 2008

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Re: Black line down the center of screen

Usually this means pixel, but I would question if the line is mostly near right side or left side of screen? If more to one side this could be a bad board inside. for more info

Posted on Dec 31, 2007

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did you fix the black line? please let me know as my TV (same model) has the same problem.

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Black line in center of screen

These black lines on the plasma screens are very fixable.  There is a dry solder joint on a circuit board at the bottom of the plasma that needs resoldered.  There are 6 or 7 "ribbons" along the bottom of the screen that correspond to vertical sections of the display, so you just follow the black vertical line down to figure out which one is faulty.  I just performed this fix successfully on my first attempt on a Gateway plasma, but it will work on most plasma's, specifically Hitachi, gateway, LG, Hyundai, & Akai. I think they may all have LG boards, my gateway did.
I can't really describe very well what to do, but I assure you it is fixable.  If anyone is near nashville, I might be able to help you out.  My email is

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