Samsung GH17ES-LS Troubleshooting
5 Troubleshooting
Notes: 1. Before troubleshooting, setup the PC’s display as below.
• Resolution: 1280 x 1024
• H-frequency: 64 kHz
• V-frequency: 60 Hz
2. If no picture appears, make sure the power cord is correctly connected.
3. If you push and hold the EXIT button for more than 5 seconds, the monitor automatically turns back
to the factory preset.
5-1-1 No Power
When Pin 6 of CN105 is 0V
does proper DC 12V, 5V
appear at Pin 1, 2 and 7 of
CN105 seperately?
Yes
Does proper DC 5 V appear at
Pin 3 of IC115?
Yes
Does proper DC 3.3 V appear at
Pin 3 of IC112?
Yes
Does proper DC 2.5 V appear at
Pin 2 of IC116 and IC117?
❇
No
No
No
No
Change power Adaptor.
Check IC115 and related circuit.
Check IC112 and related circuit.
Check IC116, IC117
and related circuit.
❇ 0V means power on state.
GH17LS/GH17ES 5-1
5 Troubleshooting
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?
No
Change power Adaptor.
Yes
Does proper DC 5 V appear at
Pin 3 of IC115?
Yes
Push Power button.
Does proper 0V at Pin 6 of
CN105?
Yes
Does proper DC 3.3 V appear at
Pin 3 of IC112?
Yes
Does proper DC 2.5 V appear at
Pin 2 of IC116, IC117?
No
No
No
No
Check IC115 and related circuit.
Check function PCB Assy
and related circuit.
Check IC112 and related circuit.
Check IC116, IC117
and related circuit.
❇❇ 2V means soft power off or DPMS state.
5-2 GH17LS/GH17ES
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