Quote Originally Posted by JimHs1 View Post
After several months of not printing, I turned my printer on. All I got was two rows of solid block characters on the displays. Any suggestions as to where to start troubleshooting? Or likely cause? TIA!
Hmm, what was the last thing you printed? Just kidding. Check all of the power supply output voltages are getting to the main board. Check that the connections to the LCD are screen are intact, maybe wiggle / re-seat all connectors.

You may need to contact Emily at QiDi in China. Her email address is emily@qd3dprinter.com.