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| Problems with Nanya M002D 240x64 T6963C. No picture on displ http://forum.lcdinfo.com/viewtopic.php?f=6&t=1466 |
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| Author: | MHc [ Sat Jan 21, 2006 21:04 ] |
| Post subject: | Problems with Nanya M002D 240x64 T6963C. No picture on displ |
I have checked the connection of display and its ok but still i have no display on LCD. On bios i have tried ECP+EPP, EPP 1.9. No success. LPT PortIO driver also installed When i start one of the LCD software i only get light flickering but notight to see on display. Display is also connected to -12volt with 5k poti. Have i forgotten something? |
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| Author: | coorz [ Sun Jan 22, 2006 1:32 ] |
| Post subject: | |
Triple check your wiring, with multimeter if possible. Also realise nothing happens when you fire up LCDinfo; it only comes to life when you create/setup the .xml files |
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| Author: | Zee [ Sun Jan 22, 2006 4:02 ] |
| Post subject: | |
One thing to note also. -12V might not be enough. My Optrex 160x128 T6963C needed -16V before it started to show any signs of life other than random lines when reset. |
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| Author: | MHc [ Wed Jan 25, 2006 23:52 ] |
| Post subject: | |
Thanks! You gave me an idea. I have connected the -12volt directly to lcd without potentiometer. Now i see a black display. I still have no graphics on it but its a small progress. Why disturb the potentiometer the lcd? Its i cant regulate the contrast when its connected over poti. Without the lcd is too black and i cant see anything on it. No text or graphics What else can i do now? |
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| Author: | Zee [ Thu Jan 26, 2006 0:04 ] |
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All black could mean it now gets too much negative voltage, but to be sure you'd have to properly display something on the screen and then adjust the voltage. |
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| Author: | MHc [ Thu Jan 26, 2006 0:29 ] |
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Wow. Now i get the picture. I have connected it again ove potentiometer and i have slowly screwed it till i get the picture. Its pretty fine tuning. Now it works. Thank you! Only contrast is not very well. How can i improve it? 10k instead of 5k? |
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| Author: | Zee [ Thu Jan 26, 2006 2:08 ] |
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The max resistance of the pot only controls how accurately you can adjust the contrast. LCDs typically don't have too good contrast compared to some more advanced technologies. |
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