AW87339 Audio Code IC

When an Oppo A5 or Vivo Y93 comes in with no sound on the loudspeaker but the ear speaker still works during calls — or the reverse — the fault almost always traces back to the AW87339. This is the audio power amplifier chip that drives the physical speaker output on these boards, and it's a separate chip from the codec, so a bad AW87339 will not show up as a software audio bug. You'll see clean playback in the equalizer or test dialer but nothing coming out of the actual speaker, which is your first clue to go straight for this IC instead of chasing software settings.AWINIC built the AW87339 as a third-generation Smart K amplifier, meaning it uses Triple-Level Triple-Rate AGC to hold output volume steady even as the battery voltage sags during heavy use. On a workshop bench this matters less for diagnosis and more for confirming the part is genuine — a counterfeit or mismatched IC will often produce distorted or clipped audio at higher volumes because it can't replicate this gain-control behavior properly. The chip also runs a 2X charge pump that boosts its internal drive voltage up to 8.5V, which is what lets a small BGA package push real volume into a compact phone speaker without needing a separate boost converter on the board. That efficiency, rated up to 90% by AWINIC, keeps the chip running cool during extended calls or media playback, so if you're pulling a board that shows heat concentrated right at this IC's location, that's consistent with a shorted or failing part rather than normal operation.On the repair bench, common symptoms pointing to this IC include: complete loss of loudspeaker or ear speaker sound, audio that cuts in and out during calls, distorted or crackling playback that doesn't clear up after a software reset, and cases where the phone boots and functions normally but stays completely silent regardless of volume level. Before you commit to an IC change, always rule out the physical speaker unit and flex cable first — swap in a known-good speaker or test with headphones through the 3.5mm path where applicable, since chasing the wrong fault on a BGA-level board wastes both time and reflow cycles. Once you've confirmed the speaker hardware is good and the fault stays with the board, this becomes a straightforward IC change karna job: remove the AW87339, clean the pads, and reball or hot-air a fresh unit into place.This part is a direct hardware match for boards originally fitted with the AW87339, and AWINIC confirms it's also hardware compatible with the AW87319CSR, so technicians working across mixed Oppo/Vivo audio circuits can treat these as interchangeable where board layout allows. Because this is a BGA package, precision reflow with proper stencil alignment matters — a shifted ball pattern is one of the most common causes of "IC replaced but still no sound" comebacks, so double-check ball alignment under a microscope before final reflow.KB GSM Store sources this AW87339 as a genuine AWINIC-spec part, tested for reliable output before it ships, so you're not gambling on a mismarked chip pulled from unverified stock. For technicians running high volumes of Oppo and Vivo audio repairs out of Lahore, Karachi, or Islamabad, keeping this IC on the bench alongside your reballing stencils and hot air station keeps audio-fault turnaround fast and predictable.