Cracked solder joints or ESD damage near the current shunt resistor or its operational amplifier filter network.
Verify if 12V/24V is present at the input connector pins. bm5291 ver 13 schematic verified
What is the (no power, no display, liquid damage)? Are there any burnt components visible? Do you have a multimeter or oscilloscope ready for testing? Главная страница | Vlab Cracked solder joints or ESD damage near the
Which (like U101, Q202, R305) are you trying to identify? What voltages have you measured so far on the main rails? bm5291 ver 13 schematic verified