Here is a quick test, unwire and isolate both PCBs from a stick
Connect each of the PCBs to a USB cable and hook that up to a computer.
See if the PC detects the boards
Before harvesting a PCB from a game controller, always test the controller to make sure the controller (and thus the PCB) works before taking the PCB.
This will save you alot of time, frustration and money in the long term. Do the same with new boards for modding like the Chimp, Cthulhu, PS360+, Kitty, Cerberus and Paewang boards. Identify that all your boards work before you start modding, and if a board is bad return it for a exchange or refund before you start to tear apart pads and start to solder.
Also is the board you harvested a common ground PCB? The Chimp only works with common ground PCBs. [S]Well there a way to make common voltage boards work but it requires a bit of hackery with alot of diodes and transistors.[/S] Stick to common ground PCBs.
Protip: PDP/Pelcian pads are not common ground, nether are all Game Stop branded Pads, just Game Stop pads made by Mad Catz.
Another Tip: The most common wiring error is confusing or miss wiring the D- (white) and D+ (green) wires.
All ways double check your wiring, including your Xbox 360’s Data - and Data + lines. Make sure on the Chimp they are wired to the Xbox 360 USB terminals.
Side with the XD+ (GREEN) and XD- (WHITE) terminals.
If necessary keep reference materials open to keep on the right track.
USB Pin out and wire color codes.