PM8004 Power iC

Samsung Galaxy S7 and S7 Edge boards that show no power, hang on the Samsung logo, or fail to charge often trace back to a fault on the PM8004 power management IC. This is a Qualcomm-manufactured PMIC that sits alongside the board's primary power IC, handling a smaller set of voltage rails that feed specific subsystems on the motherboard. When this IC develops a dry joint, gets moisture-damaged, or suffers a short, the phone can behave exactly like it has a dead battery or a faulty charging port, which sends many technicians chasing the wrong fault before they land on the real cause.On your repair bench, PM8004 issues typically show up as one of a few patterns: a board that draws no current at all on the power supply, a board that pulls current but never boots past the logo, or a unit that charges intermittently even after you replace the charging port and battery connector. Before you commit to changing this IC, check current draw on your DC power supply, run a short check across nearby components, and confirm the fault isn't sitting upstream on the main PMIC or the battery connector itself. Isolating the fault correctly saves you a reflow cycle you didn't need.Replacing the PM8004 is a BGA-level job, so it demands the same discipline as any other power IC change on a smartphone board. Start by protecting surrounding components with heat-resistant tape, then apply low-melt alloy to soften the existing solder balls and lift the old IC cleanly using your hot air station at a controlled temperature. Clean the pads thoroughly with flux and isopropyl alcohol before reballing, since leftover residue is one of the most common reasons a freshly changed IC still fails to power the board. Use a stencil matched to the PM8004 ball pitch for even paste application, then align the new IC under your microscope before reflow. A precise mount here prevents bridging and tombstoning, both of which will bring you right back to a dead board.This IC is compatible with Samsung Galaxy S7 variants including G930F, G930A, G930T, G930V, G930P, and G930R, as well as Galaxy S7 Edge boards using the same power architecture. Confirm the exact board revision before ordering, since Samsung shifted some component placements across regional variants, and a mismatched IC won't solve a power fault even if the part number looks correct on paper. Stock this IC alongside your reballing stencils, low-melt alloy, and flux so you're not waiting on a separate order mid-repair. For Karachi and Lahore repair centers running high volumes of Samsung board-level work, keeping a few PM8004 units on hand cuts turnaround time on a fault pattern that shows up regularly across the S7 series. Pair it with a stable hot air station and a good microscope, and this becomes a straightforward add to your board-level repair workflow rather than a guessing game every time a Galaxy S7 comes in dead.