Built Midipal today (v0.3). First time SMD soldering. Seemed to go quite well though
3.3v measured OK at marked points and AVR flashing all went fine. However getting a blank (but lit) display.
Flashed the LCD test referenced in another troubleshooting thread here. The LED’s flash fine but the LCD is still blank. BUT if powered via the ISP header the LCD does display ‘HELLO’ but not if powered via battery/DC connection. I’ve checked various points, including Vdd/Vss pin on the diplsya and I seem to have a fairly constant 3.3v when Battery/DC powered but the display is still blank.
Please help confused as what the check next.