ZEDiFX10 FX display issue

Out of the blue, I lost a piece of the FX parameter display (see pic)
Is it a general issue or am I unlucky? How can I fix this?
FX’s works like a charm but still: it’s pretty annoying…

pic with the right size:

If you push a little on the display does the segment come on, try also
around the display.
Maybe a bad solder connection.