PM8994 OVV Power iC

When a board comes in completely dead — no charging LED, no current draw pattern on your power supply, nothing on the display — the PM8994 OVV is usually one of the first suspects your multimeter and thermal check should point you toward. This chip sits at the center of the phone's power tree, feeding regulated voltage rails to the processor, RF sections, and display driver. If it's cracked internally, shorted, or has a lifted ball after a drop, the whole board stays dark no matter what software you throw at it.You'll mostly run into this exact part number on Snapdragon 808/810 based devices — LG G4 (H815), Sony Xperia Z3+ and Z5, and Xiaomi Mi 5 motherboards share this power IC family. On your bench, the failure pattern is fairly consistent: dead after flash, dead after liquid damage, or dead after a drop where the board shows a dead short on the battery rail. Before you commit to an IC change, always confirm with a thermal camera or current-limited power supply that the short is actually sitting under this chip and not under a nearby PMIC or the PA.

Replacing this IC is a hardware job, not a software fix — no box, no flashing tool will bring the board back if the PMIC itself is damaged. You'll need your hot air station set to a controlled profile, flux, a matching reballing stencil, and a microscope or good magnifier to check ball alignment before reflow. Preheat the board evenly, lift the old IC without dragging pads, clean the footprint completely, reball with fresh solder balls, and reflow with even heat distribution so you don't create new dry joints next to the ones you just fixed.A few things matter more than people think on this specific chip: ESD handling before you even touch it, because internal PMIC damage from static is common on repair benches that skip anti-static mats. Ball height consistency matters too — uneven balls on a power IC show up later as intermittent charging issues or a phone that boots fine cold but hangs on logo once it warms up, which sends the customer back to your shop with a "fixed but not really" complaint.This part fits into the broader board-repair workflow alongside your ISP pinout tools for reading boot logs when a board is soft-bricked rather than truly dead, your UFS adapters if the fault turns out to be storage-related instead of power, and your test boxes for verifying rail output after the swap. If you're stocking repair inventory, keeping a few of these alongside PM8996 and PMi8994 variants covers most of the Snapdragon 808/810 dead-board jobs that come through a typical Pakistani repair shop or service center.For technicians running a busy workbench, this IC is inventory you'll use regularly if you take in LG, Sony, or Xiaomi flagship-era boards — not a rare part sitting on the shelf. Confirm the exact board revision before ordering, since some batches use PM8996 instead of PM8994 even on visually similar boards.