I'd like to mention that even without the front-panel LCD, it's possible to
use this tone generator fairly well. When pressing the unit's power-off
then power-on button, the unit apparently resets itself to the default, the
first "performance" (single or dual-layer tone), which is "Grand
Piano."
From there, it is possible to cycle through the various
tones just by
pushing the "Perf / Tone" Previous or Next buttons on the
front panel.
After a while, one would become familiar with how many button-pushes it
might take to activate his or her favorite tone(s).
In addition, it's often possible to guess what the LCD might otherwise
display, just by reading the manual to see how the front-panel buttons
work, then pressing some of them repeatedly to get to the lowest value,
before incrementing them to achieve the desired parameter value.
Apparently a lot of GEM RealPiano Expander users have complained about this
short-lived LCD issue, which seems to have been a common defect on these
units. Other than this issue, the tone generator works perfectly and
produces some very nice tones for use with MIDI gear.
Best wishes,
Steve