No Picture- Pc & Hdmi Mode - Daewoo LA37L1B1LM Service Manual

Hardware Trouble shooting
4) No Picture- PC & HDMI mode
START
Yes
Check
PC/HDMI resolution to
Available resolution in
LCD TV
Yes
Check
The input power of
IC401 is correct
Yes
Check the LVDS signal
output of IC401 is correct
No
Is the input signal of IC401
nomal?
No
1) PC mode: Check the mode
JK203(RC206, RC207, RC210, RC211, RC212, LC205~207)
-> IC203(CC234, CC236, CC238) -> IC401(RC237 ~ 239)
2) HDMI mode: Check the mode
No
Check the input resolution of external device
No
Check the SMPS and input voltage
Yes
The LVDS connector and
cable is correct
IC401 problem.
Replace the Main PCB
Yes
IC401 problem.
Replace the Main PCB
-20-
Check
No
Yes
Perhaps Connector and
Cable problem.
Replace connector or cable.