Using a multimeter, check the core input voltage pin of the 8681L to ensure power from the DC jack is making it through the first stage isolation MOSFETs.
: Works safely with different types of lithium and smart battery packs. Pinout and Package Details 8681l ic datasheet
A cross‑reference search has not revealed a direct generic equivalent for the OZ8681LN. It is recommended to replace it only with an identical component from a verified source, preferably with an identical date code or lot number. Using a multimeter, check the core input voltage
: If you are soldering a new chip using leaded solder on a lead-free motherboard layout, tweak your hot-air station profile carefully. Overheating during the reflow process can delaminate or permanently destroy the silicon inside the new chip. Using a multimeter