© Parallax, Inc. • 7Seg-DB (2007.09.05) Page 4 of 5
Changing LED Displays
The four-digit LEDs are socketed, so they can be exchanged with similar units of a different color. The
sockets hold the LEDs very tightly, and they can be difficult to remove. For this reason, an extraction tool
is provided for safe LED removal.
IMPORTANT NOTE: Do
not
use any metallic implements (e.g. screwdrivers, knife blades, etc.) to
extract the LED. Doing so will mar the plastic LED housing and could damage the LED and/or the 7Seg-
DB printed circuit board.
Using the removal tool provided, slip the thin end under the top or bottom of the LED and pry gently until
it lifts slightly from the socket. Repeat on the other side. Keep switching sides and prying by little bits at a
time until the LED is free.
To install the replacement LED, make sure that it’s oriented correctly. Use the image printed (very faintly)
on the circuit board as a guide. The decimal points indicate the correct orientation. (See photo below.)
