Schematic - Adp-200er

The ADP-200ER is not a beginner-level project. The primary side contains voltages up to 400V DC which can be lethal. Even when unplugged, the bulk capacitors can hold a dangerous charge for minutes or hours.

The part number "ADP-200ER" strongly resembles the naming convention for Mean Well power supplies. Adp-200er Schematic

Action: Check the label on the metal case of the power supply. If it says "Mean Well," you can easily find the official "User Manual" or "Datasheet" on their website, which usually contains a block diagram and application notes. Note that full internal schematics are rarely public, but service manuals are sometimes available. The ADP-200ER is not a beginner-level project

On the schematic, look for the AC input (L, N). Immediately following are: Action: Check the label on the metal case

Failure clues: If the fuse is blackened, there is a dead short downstream (usually the bridge rectifier or main MOSFET).