Qianli Bumblebee Stencil (QS144) CPU+Baseband

Qianli Bumblebee Stencil (QS144) CPU+Baseband: Reballing Stencil for Android Repair The Qianli Bumblebee Stencil (QS144) CPU+Baseband belongs to Qianli’s Bumblebee stencil range, a line that technicians across Pakistan use for BGA reballing on Android boards. This model targets two IC types you handle constantly: the CPU and the baseband. When a phone shows a dead phone symptom, a boot loop issue, or a network issue after a drop, the repair often ends at the IC and its solder balls. A clean reball decides whether the board lives or comes back to your bench a second time.Where QS144 fits in your IC repair workflow You reach for a stencil after diagnostics point to a hardware fault and you decide the IC needs reballing or replacement. First you check the board for short circuits and heat-lifted pads. Then you remove the IC with your hot air station, clean the pads, and prepare the chip for fresh solder balls. The Qianli Bumblebee Stencil (QS144) CPU+Baseband sits at that reballing stage, between IC removal and reflow on the board. Pair it with a good microscope, a PCB holder, and flux, and you control each stage of the job.Reballing a CPU or baseband IC with QS144 Start by cleaning the IC pads until they sit flat and shiny. Fix the chip on a reballing base, lay the stencil over it, and align the openings with the pads under your microscope. Apply solder paste or place balls through the openings, then heat the chip with your hot air station until the balls form. Lift the stencil after the chip cools, and inspect every ball for gaps or bridges. This process saves you from re-doing jumper lagana work later, because a misaligned ball often hides behind a charging issue or a hang on logo fault. Go slowly on the alignment step, since that single minute decides the result.Check the match before you reball Every CPU and baseband IC has its own ball layout, so you must confirm the footprint before you commit to any stencil. Lay the stencil over the cleaned IC and check that the openings line up with every pad. Do this test before you apply any solder, and you avoid wasting a chip. Keep the Qianli Bumblebee Stencil (QS144) CPU+Baseband next to your other reballing stencils so you can compare footprints quickly when a new board arrives. If you want to build a full IC bench, add a hot air station, a soldering station, and a reballing kit to the same shopping list. Many Pakistani shop owners search for a Qianli stencil price in Pakistan and then stock several models at once, because one stencil never covers every Android board that walks through the door.