julienvoirin Posted March 23, 2012 Report Share Posted March 23, 2012 (edited) Dear Boxers I need your help, really, as i am not familiar with the electroluminescent (EL) technology I have a Yamaha REV7 with a very old LCD (Hitachi 44780 driver). The backlight is dead. It is not a LED backlight but a sheet of EL material. So i bought a EL sheet on ebay to replace it. When the sheet arrived i tested it by connecting it to the inverter and it has glowed. But the sheet was too big, so I cut it to the good dimensions. But after, the EL was no more glowing (??? wtf !!). I measured the output of the inverter : a pseudo sinusal 150V AC @ 222 Hz 1 - is the inverter dead ? (it transforms 5V DC in 150 AC) 2 - is he EL foil dead ? i cut it with scissors the sheet is similar to this one : http://www.elec2go.com.au/images/el%20cuttbale%20panel%201.jpg inverter is NEL-D32-46 Thanks for your help Cheers :)midiboxYamaha_REV7_Schematic_REV7-F.pdf Edited March 23, 2012 by julienvoirin Quote Link to comment Share on other sites More sharing options...
Gilesjuk Posted March 23, 2012 Report Share Posted March 23, 2012 Do you still have the pads in your design? eg. http://www.compsys1.com/support/docs/ELbacklight_Guide.pdf There are pads that need to remain as part of the foil. Quote Link to comment Share on other sites More sharing options...
julienvoirin Posted March 23, 2012 Author Report Share Posted March 23, 2012 thanks for your prompt answer Gilesjuk :) If i well undertand, you call "pad" what i call electrodes : yes there are still is place, there are 3 groups of electrod on 3 sides so that you can cut the EL foil to fit your design Quote Link to comment Share on other sites More sharing options...
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