When You Monitor Black Screen - Samsung S23A750D Service Manual

4-3. When you monitor black screen (HDMI）
-当 HDMI When the wiring is connected, the power LED Is on and the screen
Sign
black screen or W/R/G/B Pattern interruption-style display.
-Scrutineering HDMI Wiring connections.
Mainly a -Scrutineering LVDS The wiring is correctly connected to the Panel.
checkpoint
-Check 1 Layer and 2 Between connector and 60 针 FFC The wiring is
connected properly.


Diagnosis
Attention Check the make sure to disconnect power before connecting the
motherboard.
Scrut X501 Shock is normal?
是
在 R305 至 R312 HDMI Output
Whether it
是
Check 2 层 CN401 PIN
The
是
Check 2 层 CN401 PIN
The voltage for DC 5V ？
是
Replace the LCD screen.
否
否
否
1 ~ 51 Whet
否
63 ~ 67 上
Main PBA
4 故障排除
Check the signal wiring and
Check the power supply
status 1 Layer and 2
Connector between the
layers.
Scrutineering HDMI The
input and IC301
Circuit.
Scrutineering CN401 和 60 针
FFC Wiring.
Scrutineering +5V_Signal
4-9