Haas 4241D Rev B Main Processor / I/O PCB pulled from a running VF-Series machine. This is the board that does all the thinking, blinking, and “don’t crash the spindle” logic behind the scenes. If your control is acting like it’s possessed — freezing, rebooting, alarms all over the place — this is usually the brain transplant that fixes it.

Everything looks solid:

No burnt components, no lifted traces, no mystery solder blobs from someone’s cousin who “does electronics.” Connectors are crisp, pins are clean, and the serial is intact: SM19093022.

This is an honest, clean OEM board.

Condition:

– Pulled from a working Haas

– Inspected

– Fully intact

– Stored properly

– Sold exactly as shown

Shipping:

Ships fast, packed safely, and boxed like I’m shipping it to myself.

No freight for this guy — just USPS/UPS.

Legal Stuff (the necessary part):

Buyer is responsible for verifying compatibility with their machine model/year/control generation. No returns for incorrect diagnosis, accidental swaps, or “my operator plugged it in upside-down.” Board is sold as-is, exactly as shown.

Thank You:

Every purchase keeps my little operation alive and moving forward while I raise my boys and build my parts shop piece by piece. I appreciate you supporting a small family operation doing this the right way. — Brett