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STM32L100C-DISCO odd LCD issue

Question asked by bob jones on Apr 7, 2018
Latest reply on Apr 15, 2018 by waclawek.jan

Hello, So I am using a STM32L100C-DISCO to display some numbers on an LCD display, I am using the LSI as the clock source. My program works fine for a couple of hours, but if I de-power then power-on the board, the LCD booster circuit does not turn on. I thought this might be a board malfunction because of me blowing it up, but everything else works. I then bought another of the exact same board and tried it. Does the exact same thing as the first board. But now if I leave the first board unplugged for a couple of hours the LCD booster circuit on the that powers on, and my program works fine. I tried this with the second board but with it still plugged into the LCD but with no power, and the booster circuit wont start up. I have no explanation for this. I am using AC6 with the latest firmware.