01-24-2022, 07:42 AM
(01-13-2022, 06:35 PM)cndg Wrote: How are the DIP switches physically wired? Is there a PCB diagram to prove that they're not just a software trick?We've got the schematic but no gerbers. Look for sw1-c if you want to see what the mic switch is doing, and how you could verify it. It's meant to physically interrupt the bias power to the mic so you could check continuity when the phone's not powered to see if it operates as advertised. That may not be enough to convince you there isn't a sneaky transistor in parallel that can be used to bypass the physical switch though.