Upon intitial plug-in, the LCD board blinks at a frequency slightly more than once per second. No text appears on the screen.
I consulted this forum and found a solution posted: that the pins between the LCD board and the SC card reader board were too short (or the spacers too long). I removed the spacers (temporarily) to try to get a better connection but the result was the same - blinking LCD screen.
I’d be grateful for any advice.