No Video (Digital-Hdmi) - Samsung T220HD Service Manual

4-4. No Video (Digital-HDMI)

Symptom The LED power turns on but the screen is blank when the DVI cable or HDMI cable is connected.
Even though the LED power turns on, the screen is blank when connecting the DVI cable or
HDMI cable.
Major
Check the DVI cable or HDMI cable connections.
checkpoints
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
Diagnostics
Caution Make sure to disconnect the power before working on the IP board.
IC3250
D3006~D3013
Power Indicator is off.
Lamp on, no video.
Yes
Check the connection
of HDMI cable?
Yes
Yes
Does the digital data appear at
output of IC3250 (PIN43,42,40,39,
37,36,34,33)?
Yes
Does the digital data appear at
output of IC5002?
Yes
Check a LVDS cable?
Replace lcd panel?
IC5002
Main Board Front
No
No
No
No
No
Please, Call to Samsung Co. LTD.
4. Troubleshooting
D3204~D3211
Input a HDMI cable.
Check HDMI cable.
Change the cable.
Check the IC3250.
Change a main PBA.
Check the IC5002.
Change a main PBA.
4-7