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Contents at a Glance                        FOR VIDEO OF INSTALLATION CLICK HERE
Step 1:  Determining your controller type (CG or Matrix)
Step 2: Cracking the case and pulling the mainboard
Step 3: Preparing the chip and fastening it to the mainboard
Step 4: Installing in a CG type controller  OR  Installing in a Matrix controller
Step 5: Glueing the mod in place and closing the controller
Glossary - Explanation of components and other useful stuff

1 - Determining your controller type:
There are two primary ways to determine controller type.  One that requires opening the controller case and one that does not.  Of course the one that includes opening the case is the more absolute way so if you need to be 100% sure go ahead and open the controller up.  As you will see when we continue with the installation instructions the Matrix connection for the sync button is on a chip not the sync button where the CG chip mainboard we connect to change modes right on the bottom of the sync button.  Click here to see instructions for opening your controller.

First - checking by simply removing the battery compartment.

Matrix mainboard has only small surface
mount chips above the right battery connection.
Matrix Mainboard Indentifier
CG Mainboard has a black surface mount
chip above the right battery connection.
CG Mainboard Identifier

Second - checking type by looking at the mainboard.
With the removal of the bottom of the case this
is the view of the Matrix chipset mainboard.
Matrix Mainboard View
Matrix has a large chip along with a sub-board
with chip and sometimes the metal heatshield
is on and sometimes it is not.
After removing the bottom of the case this is
the view of a CG chipset mainboard.
CG Mainboard View
Notice the chip on the CG mainboard is turned
like a diamond shape where Matrix has a pair
of chips both squared on the mainboard.

2 - Cracking your case and pulling the mainboard:
The instructions for opening the case of a xbox 360 wireless controller are relatively simple.  You first remove all the screws.  Six of them are visible and easy to locate.  The seventh screw is located under the serial number sticker found by removing the battery compartment.  After all screws are removed you may carefully pull the rear case from the controller in a flip motion starting at the bottom of the controller.  When doing this keep the controller face down so the buttons and other hardware will not fall all over the place.  Now firmly holding left and right side of the mainboard wiggle board and lift it out.  See photos below:
Remove Serial Sticker
Remove Last Screw Number Seven
Remove Bottom of Case
While Holding Sides of PCB Wiggle Mainboard Free

3 - Preparing your chip and fastening it to the mainboard:
The process of fixing the chip on the mainboard is easy but you must pay attention to the orientation of the chip.  First take the chip and with a pliers bend pins to a 90 degree angle as shown below.  Next get ready to put the chip on the mainboard.  Lay the board joysitcks up and battery connection down and bottom in front of you.  The chip will be glued to the board on the right side of the right control stick just to the right of the plastic tab coming through the mainboard. To do this make sure that pin one(identified on chip by notch on the surface of the mod chip) is going to be at the bottom of the board or lower side when gluing in place.  Now put a small ball of hot glue in location as shown by red circle and immediately stick chip down in glue.  Push chip to sit flat on the mainboard and make sure it is not interfering with the hole on the board to the right side of the chip.  See photos below:
Bend Pins on Chip
Apply glue to this location
Fix Chip in Place as Shown

3b - Preparing Tactiles and Chip Orientation

Take the tactile and bend legs as shown - be careful not to break them off.
Then solder two wires on the switches as shown - twist wires to add strength.
Tactile Buttons

Find two nice spots for holes for tactiles - drill and install buttons with hot glue to hold them in place.
Wiring tactiles

When install chip make sure you install it in the dead bug position as improper install can cause reverse chip placement which will cause chip to overheat and burnout.
Chip orientation

4 - Locate schematic for your Mod chip/controller:

Locate your schematic for your Matrix type controller.

Matrix User Programmable CG User Programmable

4 - Installing into a Matrix type controller:

Step 1 Matrix

Matrix Install 2

Matrix 3

Matrix 4

Matrix 5

Matrix 6

Matrix 7

Matrix 8

When complete do not forget to see STEP5 to glue down chip and wires.

4 - Installing into a CG type controller:

CG Install Step 1

CG 2

CG 3

CG 4

CG 5

CG 6

CG 7

5 - Glueing the Mod in place and closing the controller:
Before closing the controller you want to make sure the job you did will stay put with normal wear and tear.  Of course this sometimes includes the controller being thrown across the room although your kids may never tell you that.  To do this you will hold the glue gun right at the chip and wire job and sort of inject hot glue into the whole works.  You want to get it all over the stuff but not make a big ball on top of it so just enough to get in there should do the job.  Be sure to also check all the wire routes and tack them in place with a touch of glue here and there so the wires will not come loose.  Be sure not to get any glue on the round contact points where the buttons do there work on the board.
Next after the glue has cooled we will hold the controller and flip the mainboard back into place bottom first.  Double check the sync button to make sure it is in place and functions before putting the bottom cover back on.  Now as you close back cover make sure battery contacts slide into housing first then slip over the top triggers.
Chip before glueing
Chip after glueing
Holding controller in left hand flip mainboard with right
Check sync button tab is visible and button clicks
Insert battery contacts into housing first when closing
Verify installation by checking leds

With a job well done you can now install batteries and check the led indicator to test for mode changes.


Checking your components - Resistors
Resistor types

Installation and definition of a diode:
A diode is a common electrical device that restricts flow of an electrical current. It can be simply thought of as a check valve for an electrical circuit. Any circuit that requires flow in a particular direction will contain diodes.
Installation of a diode

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