PSP Fat Analog Stick on Slim: Not Compatible — Different Connector

No direct swap. PSP-1000 (Fat) and PSP-2000/3000 (Slim) use different ribbon cables and connector pitches for the analog stick module.

• Fat: Wider connector, different pinout.
• Slim: Narrower, revised pinout.

Options

1. Buy correct Slim analog stick ($5–$10 on eBay/AliExpress).
2. Replace entire faceplate/control board from a donor Slim (requires soldering).
3. Adapter boards exist but are rare/unreliable.

Don't force it — damages motherboard connector. Buy the right part.