Modding documentation does exist for the JDM‑040. For example, the “DS4 RemappeD” guide identifies solder points for:
Analog stick drift is arguably the most famous controller failure across all console generations. The JDM‑040 is no exception. However, stick drift can sometimes be misdiagnosed. In one unusual case, a JDM‑040 board produced inputs that only moved in 45° increments (up, down, left, right, and diagonals)—never in smooth analog sweeps. Even after replacing the joystick modules and their potentiometers, the problem persisted, suggesting a deeper fault on the motherboard itself.
, Δ) and D-Pad operate via conductive rubber pads pressing against trace pads on the board.
Each potentiometer splits the 1.8V VREF signal into a variable voltage based on stick position. This voltage is fed straight into the MCU's analog-to-digital converter pins. jdm-040 schematic
In one documented case, a JDM‑040 controller would not turn on and would not show the orange charging light when plugged into USB. After comparing the board with online PCB scans, the owner discovered two missing resistors. The community identified them as —one 100kΩ and one 100Ω .
If you are repairing a controller without a full visual schematic, you often need to probe specific points.
If you can tell me (e.g., drifting, no power, broken button), I can provide more targeted repair steps . Or, if you need help identifying a component , I can help with that too. YouTube·CircuitRepair Augusta Modding documentation does exist for the JDM‑040
The JDM-040 is a mid-generation revision of the PS4 controller. It is commonly found in the "Slim" or "Pro" controller models. Key identifiers include:
This indicates the MCU detects the USB cable, but the battery charging circuit is failing.
are thinner than older models, making it susceptible to "pad lifting" if a technician applies too much heat during a joystick replacement. Fuse Protection: However, stick drift can sometimes be misdiagnosed
Another thread detailed three missing components: two resistors and one capacitor. The community provided these values:
The primary controller chip that handles input processing and Bluetooth communication.