Welcome to the Projects page.
For our first project, I'll replace the Korg 2-prong AC socket with a standard IEC three prong
socket. This allows you to use a standard, ubiquitous IEC standard AC cord with your Korg
synthesizer, and you can stop worrying about misplacing your Korg 2-prong cord.
I've started by removing the EX-8000 top case. To remove the case, simply unscrew the
three screws holding on each rack ear, the two screws on each side, and the two screws that
hold the case to the back of the unit. Here is an inside look at the Korg 2-prong socket.
There are two wires that connect the socket to the AC power transformer and power switch.
The socket is held into the case back by two screws. Simply remove the screws and cut
the wires off the socket to completely remove the socket. Here is an exterior view of the
Korg 2-prong socket in the EX-8000. The AC socket in the DW-8000 is identical, so you can
use these instructions for either instrument.
The next picture shows the new 3-prong IEC socket net to the old 2-prong socket.
The screw spacing and width of the sockets are identical, but the 3-prong socket body is just
slightly taller than the 2-prong socket. To get it to fit you can either enlarge the rectangular
opening in the case back to fit the 3-prong socket, or you can trim down the 3-prong socket to
fit the rectangular opening in the case back. Since the case back is steel and the IEC 3-prong
socket is plastic, I chose to thin down the 3-prong socket body. I used a Dremel tool with a small
sanding drum and simply ground away a bit of the top and bottom of the plastic body of the socket.
You could also use a file or a rasp to do the same thing.
The last picture shows the new IEC 3-prong AC socket installed. I've soldered the two wires
that went to the old socket to the outer pins of the new socket. If you wish, you could solder
a wire from the middle pin to a chassis ground, but I didn't bother. Functionally the new socket is
identical to the old socket, except that it takes standard IEC power cords available everywhere for
next to nothing. My EX-8000 was originally wired for 220 volts AC, but I rewired it for 117 and changed the markings accordingly.
This is a really simple project that I recommend even if you haven't lost your Korg 2-prong
AC power cord. It's especially convenient if you gig with your 8000; since most other gear also
uses standard IEC 3-prong AC cords, you won't have to worry about keeping tabs on your Korg power
cord or worry about it getting mixed up with your bandmates' cords. Anywhere you go, a standard
computer AC power cord is all you'll need. IEC standard cords are also readily available in
different lengths, making it more convenient to wire your rack.