Question about Norcent Technologies PT4231 42 in. HD-Ready Plasma Television

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Eske told me to ask you

Firstly, thank you for your reply. I don't have a good camera, so I'm sending you a pic I made. The thing is that the TV reaches a certain temp. and then these vertical lines show up. Like I said they are sporadic and only visible on darker pieces of picture (black or grey). Thank a lot for your trouble.

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Thats usually related to the control board being defective when its across the entire screen, But check the ribbon connections on the control board

Posted on Jun 25, 2008

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Please go to, enter the tv repair forum, then you will see a feb. 2nd post by krjandsue regarding a soyo tv. open that post for a detailed explanation of the problem, including pics....

Good day!!!

Sorry for the late response because my internet connections got problem hope you understand..

OK,First thing I need to know if the board on the picture in the forum is the original board of your TV or it is the board you purchase..

If that is the board you purchase I think that board is the exact replacement however it different on the version of said that the TV works fine but the remote is not function..Or the IR is bad..

try to see the version on the original board to the new purchase board if the same..

check the encircle part of main board need to compare..


If they are the same the problem I see is the IR sensor try to clean it first including the glass protector before you replace it..

But if the problem is different version no choice you need to replace the board or contact the store where you buy it and ask for replacement..

Just keep on touch to fix the problem..

Hope it helps
thank you

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It's probably just a fuse.
I don't have a physical layout of that TV inside though so if it's blown, I'd need pics.

Here's the possible good news though.
He may have simply tripped the power supplys' protection circuit.
Unplug the TV for 5 minutes and plug it back in, it may be fine!
It takes a while being unplugged to reset the power supply when that sort of thing happens.

If the TV still won't come on, you'll need to open it up and get some good shots on the power supply board and the board that the service port is on, and of the cable that connects the 2 of them together.
If the pictures are good enough, I can point out where the fuses are.

If the photos are necessary, post a comment or reply here and I'll give you an address to send the photos to.

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Just recently, I was told how to get another tv.
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You will get yourself a tv

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Eske told me to ask you!

Are the vertical lines across the entire Screen? If so it could be the control Board. If the lines only go part way from the top but not all the way to the bottom. Depending on where they are it could be the x boards. can you post a picture of your screen with the lines?

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Here is the deal, if you're under warranty, Hitachi will cover the part and the install. If you're not under warranty, all you pay is the install. Our install cost $400. Others on this site have paid $200. Do not let anyone tell you that you have to pay for the light engine do not. Hitachi has not recalled this part but they are replacing it for free. Also, deal only with Hitachi customer realations number that I listed. Good Luck

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