As I tried to explain above, measuring resistance in-circuit does not often give meaningful results. Completed circuits are often non-linear (do not follow Ohm's law), so you can draw no conclusions from the value measured by a meter using an arbitrary voltage source.After I took out the PMIC, I found that the DDR section has a very low resistance to ground, around 6 ohms. I tested this with the capacitor pins connected to the ground. I think that's not normal, and that's why the multimeter kept beeping continuously when I measured the C8 capacitor last time. I want to know if this resistance value is normal.
Yes.I took another close look at the schematic. When the red light goes out, the 5V on my board is normal. The schematic shows that it's also affected by the PWR_LED_OFF network. Is this a command from the main controller that triggers at that time?
Statistics: Posted by davidcoton — Sat Jun 15, 2024 8:59 am
