Samsung UE32D55-R Series Service Manual page 99

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4. Troubleshooting
No Video (Analog PC signal)
„
Symptom
Major
checkpoints
Diagnostics
Caution
4-50
Audio is normal but no picture is displayed on the screen.
-
Check the PC source
-
Check the Arsenal, Check the Main Chipset.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the PC source and
check the connection of D-SUB ?
Yes
Does the signal appear at
1
PIN - R, G, B, HS, VS (R, G, B, H, V) ?
Yes
Does the digital data appear at
2
TP-E_TXCLK+, E_TXCLK- ?
Yes
Check the LVDS cable?
Replace the LCD panel?
Make sure to disconnect the power before working on the IP board.
Digitized in Heiloo Netherland
No
Check a set in the 'Stand-by mode'
or 'DPMS mode'
No
Input the analog PC signal properly.
No
Check CN401, PC cable.
Change the Main Assy.
No
Check IC1111 (X5).
Change the Main Assy.
No Please, Contact Tech support.
4/30/2017