I'm working on 820-00850 board, it has no signs of liquid or physical damage. Customer states computer just turned off by itself. Some info about board:
- Stuck at 5v 0,45A
- LDO's on CD3215 are not shorted
- PPBUS_G3H is 0V, shorted to groud on system side (diode mode 0,000V)
- PPBUS_HS_CPU 0V, shorted to ground (diode mode 0,000V)
- PPBUS_G3H and PPBUS_HS_CPU are shorted to each other (diode mode 0,000V, 0,000ohm resistance)
- PP3V3_G3H is 0V, not shorted (diode mode 0,384V)
Is there any sense do dig into this board? I guess CPU got 12V from PPBUS and got fried, right?
- Stuck at 5v 0,45A
- LDO's on CD3215 are not shorted
- PPBUS_G3H is 0V, shorted to groud on system side (diode mode 0,000V)
- PPBUS_HS_CPU 0V, shorted to ground (diode mode 0,000V)
- PPBUS_G3H and PPBUS_HS_CPU are shorted to each other (diode mode 0,000V, 0,000ohm resistance)
- PP3V3_G3H is 0V, not shorted (diode mode 0,384V)
Is there any sense do dig into this board? I guess CPU got 12V from PPBUS and got fried, right?