I think this is a unique constellation of symptoms:
- Testing with 7V 250ma current limit.
- Drive showed up during initial power-on, but started with long delay (10 sec?)
After firmware is installed:
- ~10 second delay from power on before it recognizes power-on press
- Ultimately, LCD backlight comes on about 10-15 sec after power-on press
- After backlight is on, about 150ma...
- No characters in LCD display, can adjust contrast to see top line of blocks.
- Power-off press does not work.
- Putty terminal does work, hardware diagnostics report both power supplies are up
So, two questions:
- What should I check to find that high current draw? (Some sort of initialization failure?)
- What might impact the LCD display in this way?
TIA for any hints!
Paul
Paul - AI7JR