XM Radio Mod / Hack - Pioneer GEX-FM903XM

This is the mod /hack for the Pioneer GEX-FM903XM tuner.

Open the case with the 4 screws.
Remove the screw for the heat sink for the Voltage Regulator transistors.
Remove the screw in the center of the board.
Twist the metal pieces along the edge of the board that are used as hold downs.


You can tap the audio in 2 different places.

#1. Tap near the 8pin IC near the center of the board, on the top.
There are 2 surface mount resistors, one above and one below the IC. They are both Grey in color . Tap the left side of each.




This will give you your Left and Right channel + audio.
You can get ground - from one of many place. You can use the center screw in the middle of the board, or one of the metal lids over the DIGITAL or ANTENNA modules.



#2 spot is on the bottom of the board.
There are some test points on the top left of the board.
Locate the 3 test points labeled:
RCH AGND LCH




These are the Right Channel, Audio Ground and Left Channel.
Simply tap all 3 of these for audio.


That is all there is to it, for getting RCA audio out of the Pioneer GEX FM 903 XM tuner.