Hello,
I'm looking for some assistance for a MS-16J91 board. When the adapter is plugged in, the powerled flashes slowly 3 times.
19v main rail is always present, +3VALW and +5VALW are always present.
+3v and +5v on the coils and +3.3v on bios chip are active untill the powerled goes off.
Following the power sequence after +3 and +5 comes +1.2v for dimm on choke 9 I only have 0.1v.
Drain of Q22 is 19v
Source and gate are 0.1v
I tested Q22 and Q25 on the board in diode mode, and they look ok.
Maybe PU5 is the problem, but don't know how to diagnose this.
I found boardview and schematic on this forum:
https://www.badcaps.net/forum/troubl...ic-please-guys
I'm looking for some assistance for a MS-16J91 board. When the adapter is plugged in, the powerled flashes slowly 3 times.
19v main rail is always present, +3VALW and +5VALW are always present.
+3v and +5v on the coils and +3.3v on bios chip are active untill the powerled goes off.
Following the power sequence after +3 and +5 comes +1.2v for dimm on choke 9 I only have 0.1v.
Drain of Q22 is 19v
Source and gate are 0.1v
I tested Q22 and Q25 on the board in diode mode, and they look ok.
Maybe PU5 is the problem, but don't know how to diagnose this.
I found boardview and schematic on this forum:
https://www.badcaps.net/forum/troubl...ic-please-guys