I had a broken laptop and I wanted to take advantage of its screen, so I disassembled it and noticed that the display is a Quanta QD15TL07:

enter image description here

So I found this controller board on eBay: http://r.ebay.com/94mdmr Model M.NT68676.2A

enter image description here

The problem comes when I've connected it to the display, the image is shown four times on it:

enter image description here

I'd like to know if anybody has experienced the same problem or if you guys know if I have to change something on the board.

  • Wrong sync signals? Wrong resolution?
    – dirkt
    Jan 24, 2017 at 17:22
  • How can I check that?? I don't think the resolution is a problem since it doesn't matter if I connect something to the display or not, it always shows the same way.
    – JV Lobo
    Jan 24, 2017 at 17:28
  • If the controller board puts out, say, 640x480, and the LCD resolution is 1280x960, you'll see 4 frames as four images, like in your photo. Do you have a manual for the controller board? Diagram? Anything?
    – dirkt
    Jan 24, 2017 at 17:32
  • On eBay description it says Max Resolution 2048x1152: i1244.photobucket.com/albums/gg564/oupin/1-9878_zpsj9p9nuu7.jpg I've also found this manual with diagrams: vslcd.com/Specification/M.NT68676.2A.pdf and also another PDF here: elecrealm.com/down/html/?39.html Thanks :)
    – JV Lobo
    Jan 24, 2017 at 18:05
  • Did you try to get into the "factory mode" as described in the second link? Are there any other menu items besides those visible in the picture? You shouldn't touch brightness, contrast, and the color temperature settings, but maybe "LVDS Map" does anything useful? Also see here.
    – dirkt
    Jan 25, 2017 at 9:12

1 Answer 1


the m.nt68676 board itself IS universal, but it needs the correct firmware for your panel. i know, youre thinking "oh cool i'll put the right firmware on it" im gonna stop you right there and say you cant easily reflash the firmware. it requires a special programming board and adapter that costs more than the m.nt68676 itself :( ive had mixed luck with ebay ones: ebay listings that already have the correct model in the listing itself are fine. these are boards already programmed for that exact model. listings with no model number applied will ask you to give them the model number before they ship. they flash the firmware they THINK is for yours, and send it to you. these havn't worked out well for me. (sorry to reply to an old post but im leaving a breadcrumb for anyone else following this google trail to their issue)

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