The board typically takes a 12V input. The schematic shows how this 12V is stepped down using buck regulators to: For USB and logic circuits. 3.3V: For the Main IC and EEPROM. 1.2V/1.8V: Core voltage for the processor.
If the standby light is off, check the 1117-series regulators or the small 5-pin DC-DC converter ICs identified in the schematic. 2. The LVDS Interface
Check the LVDS mapping in the service menu or verify the LVDS cable wiring against the schematic pinout. Conclusion
The board typically takes a 12V input. The schematic shows how this 12V is stepped down using buck regulators to: For USB and logic circuits. 3.3V: For the Main IC and EEPROM. 1.2V/1.8V: Core voltage for the processor.
If the standby light is off, check the 1117-series regulators or the small 5-pin DC-DC converter ICs identified in the schematic. 2. The LVDS Interface
Check the LVDS mapping in the service menu or verify the LVDS cable wiring against the schematic pinout. Conclusion