Samsung GH17LS - No Power (Continued)

5 Troubleshooting
5-2 GH17LS/GH17ES
5-1-2 No Power
When Pin 6 of CN105 is
around 2V, does proper DC 8V,
3V appear at Pin 1 and 7 of
CN105 seperately?
Change power Adaptor.
Yes
Yes
No
Push Power button.
Does proper 0V at Pin 6 of
CN105?
Check function PCB Assy
and related circuit.
Yes
No
Does proper DC 3.3 V appear at
Pin 3 of IC112?
Check IC112 and related circuit.
No
Yes
Does proper DC 2.5 V appear at
Pin 2 of IC116, IC117?
Check IC116, IC117
and related circuit.
No
Does proper DC 5 V appear at
Pin 3 of IC115?
Check IC115 and related circuit.
No
❇❇ 2V means soft power off or DPMS state.
❇❇