Disclaimer: This post is for informational purposes only. Attempting repair involves risk of electric shock and permanent damage to the device. Always consult a certified technician if unsure.
Deep Dive: The Importance of the PreSonus StudioLive 24.4.2 Service Manual (And Where to Find It) Presonus Studiolive 24.4 2 Service Manual
The Alps faders wear out. The manual lists the exact fader part number and the re-calibration routine you must run via the hidden service menu (usually holding specific buttons during power-on). Disclaimer: This post is for informational purposes only
The 24.4.2 is notorious for PSU capacitor failure. The service manual provides the voltage rails (+15V, -15V, +48V, +5V, +3.3V). Without the schematic, you are probing blind. Deep Dive: The Importance of the PreSonus StudioLive 24
To do the latter, you need Why You Can’t Use the User Manual for This Let’s be clear: The User manual is great for learning how to route a subgroup or set up an FX bus. It is useless for hardware repair.