TL;DR
A DC-in jack is the power input port on a laptop or other portable device where the charger barrel or connector plugs in, delivering current to the charging circuit. Years of insertion stress crack its solder joints on the motherboard, producing the classic symptoms: charging only when the cord is held at an angle, intermittent battery icons, or no power at all.
What it means
A DC-in jack is the power input port on a laptop or other portable device where the charger barrel or connector plugs in, delivering current to the charging circuit. Years of insertion stress crack its solder joints on the motherboard, producing the classic symptoms: charging only when the cord is held at an angle, intermittent battery icons, or no power at all. Repair ranges from replacing a modular jack-and-harness for cheap to board-level soldering work; on USB-C machines the equivalent failure is a worn port, with similar wiggle-to-charge behavior.
Where it sits in the glossary
DC-in jack is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
License: CC-BY-4.0 — quote freely with attribution to ProFix Editorial Team / ProFix Directory.