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I got a question pertaining to the following thread ( http://www.fixya.com/support/t1808523-dell_4201c_horizontal_static_lines ). The OP said he replaced the board and it did not change the picture. Another poster ( ejb747vh ) said the same thing. What are the possible problems that could be causing this and what methods of diagnosing can we use? I have access to multimeter, oscilloscope, etc. The picture posted by the OP is very similar to my problem except the red lines seem more horizontal for me. Peter

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  • sdijkk Sep 13, 2010

    The menu functions work properly. Is there a way to check these boards outputs to determine which is malfunctioning? I have access to multimeter, oscilloscope, etc. I would like very much to find the board and even down to the component(s) that are causing the problems.

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The only other possibility for this problem is the energy sustain circuit. There are two sustain boards x-sus and y-sus that you have to replace to get rid of this . The logic board was just one of the possibilities but it also has additional symptoms like the menu functions not working.

Posted on Sep 13, 2010

  • eagle338
    eagle338 Sep 13, 2010

    I would have loved to help you do that but the only component that is not solid state on these boards are the electrolytic caps. You can try testing their capacitance to see if the values are abnormal.

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1) FOLLOW ANTI-STATIC PRECAUTIONS

There, did I say that loud enough? I want 'Everyone in the room to hear me'.

You body carries Static electricity. Static WILL fry out (Short Circuit) the delicate hardware components inside a computer.

Relieve your body of Static BEFORE working on a computer, and BEFORE touching any of those hardware parts.
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Computer on a table, computer unplugged from power, computer case open.
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Should you leave your computer in the middle of working on it, (Restroom break, lunch/dinner, etc), be SURE to Touch the metal frame again upon your return.

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3) http://www.fixya.com/support/t474552-connecting_front_panel_leads_generic

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http://www.grainger.com/Grainger/wwg/search.shtml?searchQuery=dayton+6A855&op=search&Ntt=dayton+6A855&N=0&sst=subset
Grainger owns Dayton, so you might want to contact Grainger
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Buying Dell Power Supply for 4201C Plasma


You can get it from guy at
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here is an example:

http://www.jr.com/panasonic/pe/PAN_TH42PX80U/

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