When A Blank Screen Is Displayed (Displayport 1) - Samsung Odyssey G7 LC27G7 T Series Service Manual

Troubleshooting

4-2-3. When a blank screen is displayed (DisplayPort 1)

Symptom
• Even though the LED power turns on, the screen is blank when connecting the DP cable
• Check the DisplayPort cable connections.
Major
• Check whether the LVDS cable is connected correctly to the panel.
checkpoints
• Check whether the lamp connector of the panel is connected correctly to the Main board.
Diagnostics
Caution • Make sure to disconnect the power before working on the Main board.
• Graphics Card List
No. Manufacturer
1 AMD
2 nVIDIA
3 Intel
4 APPLE
4-6
Check the connection status of the
signal cable.
Yes
Does X1001 properly vibrate?
Yes
Is input signal of CN401 ok?
Yes
Can you check output signal at TP of
CN1401?
Yes
Is DC 12V measured on Pin 46~51 of
CN1401?
Yes
Check the panel and replace the
main board.
Product Name
HD7970/R9 290X/R7 260X
GTX780/GTX680/GTX960
HD4600/HD4000
MacPro D300/D700
Check and replace the circuits
No
related to X1001.
No Check the circuits around CN401.
No Check the circuits around CN1401.
Check PANEL_12V_PW.
No