Hey all,
A bit of an update to my $51 buck DW-8000. I had two keys sticking
(Eb and E) with was really bothering me so I decided to take a shot
and fixing it. While I had the cover off, I found the long lost
joystick wedged inside. It snapped back into place as so far I have
the north/south option, the extra parts for the east/west movement
(bend) is still missing so I will call Korg and see what they are and
if they have them in stock. If not then those of you who were so kind
to help, I will contact.
In other matters, while I had the cover off I decided to take some
pictures for reference. See link to Flickr below... To work on the
actual keyboard I had to separate the DW-8000 into 2 sections. PLEASE
NOTE. If you use any of the following information, DO SO AT YOUR OWN
RISK!
The cable that connect the two section end in four connections on the
main boards. One is smaller but the other three are the same size,
before you remove them mark the board and connector somehow so you
will remember. Don't count on memory! But in case you don't mark
them, I have uploaded the pictures to Flickr and they can bee seen at
the link below.
The keyboard problem was a real pain. IF you look at the photos you
will see that there is a circuit board on the bottom of the keyboard.
I believe this is for the contacts. To access the keys you have to
remove the two cardboard covers then all those screws holding the
circuit board to the keyboard. While I was looking at the keyboard
trying to figure out the sticking problem, I saw that each key had a
flange underneath that I am guessing works as a guide as it moves up
and down against a metal post under each key. Probably to prevent too
much left/right movement. I at first thought this was the problem but
turned out it wasn't. It was then I know I had to remove the entire
circuit board. Be gentle if you do as it is in two parts connected by
a set of jumpers. Try not to flex the jumpers as they are 30 some
years old.
Once that board was removed, I was able to figure out how to actually
remove the keys one at a time. Squeeze and press down at the hinge
point. If you are looking at the keyboard you will know what I mean.
Once I removed the keys the problem was resolved. Under each key,
hidden inside, was a metal stop that come up from the metal frame to
the inside of each key. This acts as a down-travel stop. The two
keys that were sticking, the stops were bent to the right. Must have
been a resounding drop to bend them! Anyways a twist with pliers and
all is well. Everything went back together and surprise surprise,
it all works! One thing I did do while the cover was off was, using
a Sharpie pen, I wrote my name on the inside case. Useful for ID if
it ever gets stolen. Anyway, I have an important question that will
be poised on my next post. Hope this may help anyone who has to
rip into their keyboard.
Flickr link (copy and paste)
http://www.flickr.com/photos/lonepiper/sets/72157610421303419/Jack
PS, I uploaded to Flickr to save room here, if the mods want the pics
feel free to upload to the Picture section or drop me a note and I
will. Not sure if useful but just in case they help someone....