Discount RepRap LCD controller

I use Discount RepRap LCD controller.
The VERY strange thing is that this controller works when it decide.
- Sometimes it starts and all is OK, 
- sometimes after good start, the values on the display becomes unreadable (some very strange symbols); 
- sometimes the problem disappears and it returns in a normal stage; 
- sometimes it shows only two white lines; 
- sometimes "Emergency Stop" helps deciding the problem, sometimes - not
I tried with different LCD controllers, different RAMPS, with different cables, different firmwares (even with Marlin). Nothing changes.


  • Sound like uncomplete data transfer. If different cable do not work, check soldering of pin headers on printer board and smartcontroller.
  • Thank's

    I'll do this and will report the results.
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