Name: Kyle Riffel
Tutorial Name: Dreamcast
Pic: vmu_led_mod1.jpg | vmu_led_mod2.jpg
Tutorials Model: Dreamcast -Model HKT-3020, and Official Sega controller HKT-7700,
and official Sega VMU.
Why should I do this:
This mod just adds
class and look to your DC. It especially makes the DC better looking if you have
a color scheme, for example my blue scheme, in which you could match an LED to fit
the color. I have my DC buttons, controller faceplate and triangle on lid all painted
light blue. I replaced the power LED with a ultrbright blue LED, and installed an
ultrbright blue LED to the fan vent. With this mod, I added another ultrbright blue
LED to my white VMU to match the system. Looks really good.
What you will
1. Sega brand VMU
2. Solering iron, and rosin core solder. 60/40
3. Drill, with bits
4. 5-10 Ohm resistor. I recommend a 10 Ohm resistor
if using an LED that runs 4 - 4.5v.
5. 5mm LED, any color, that runs 4 - 4.5v.
7. Black tape
9. Phillips head screwdriver
Let's Go Dogg:
Ok, start off by removing the four screws holding the VMU together.
Carefully remove the back, and pull the speaker off. It's being held on with a sticker
type thing. Look at the VMU now with the back removed, making sure the screen is
facing down. The first place to solder is in this area.
Look by the area in
which the VMU plugs into the controller. You'll want to solder wire for the ground,
and positive points to the set of pins on the right. Look at the diagram...
you got the wire soldered, you'll need to solder your 5 - 10 OHM resistor to the
positive lead from VMU, then to the pos. on the 4.5v LED. Either solder the resistor
leg directly to the LED, or to another wire, then to the LED. I did it directly to
the LED, and insulated it with black tape so it would touch anything during operation.
Make sure you know which leg is pos. Usually the longer leg is pos. on LED's.
plug the VMU into the controller. Make sure the controller is plugged in, then start
the system up. The LED should come on before the Sega screen even thinks about appearing.
DON'T try to test it without the resistor in place! You'll blow the F1 resistor on
the controller board. That's a whole another tutorial you'll have to find someone
else to fix that!
Drilling for Gold! Wait, Just Mounting the LED:
the LED works like a god, and looks good. We need to mount the mofo! Remove the batteries,
then the 2 screws that hold the battery connections from the VMU so we can take out
the guts. We are doing this becuase we need to put the whole case back together so
we can drill a mounting place for the LED. The LED, no matter what kind you use,
will not be able to be placed in the hole, BUT, the wires for it will go through
this hole. The LED will have to rest as close to the hole as possible. Why? Because
the VMU's board get's in the way. Anyway...
Put the whole case back togeter
with the 4 screws and everything, but make sure all the guts are removed. We need
to pry the little plastic peice on the bottom out to make room for the LED. Ok, now,
start with a small bit, and drill a pilot hole in the center. Make a hole big enough
that you know the LED wires will fit in it. Don't make a hole big enough for the
actual LED to fit inside.
Remove the 4 screws, and place everything back together.
Lay the LED in it's spot, adjusting the wires as you play around. Hold the LED in
it's spot while you apply superglue to the BOTTOM of the LED, and wait until the
glue is dry enough to hold the LED in place by itself until it's all the way dry.
Once the LED is mounted, and not moving, start adjusting the wire to fit around the
battery, and not interfere with anything.
Put everything back together, and
test one more time. Works! Yeah!
1. Make sure all solder joints are correct, and not touching
2. LED is backwards. You got pos. on neg. and neg. on pos. Bad
3. You resistor is too strong. The difference between 5 and 10 Ohms isn't
that much. You resistor may not be one of these values. You HAVE to have a resistor,
or the F1 resistor in the system will blow. Now your controller board is damaged.
That resistor will need replaced.