LG BH4120SN, LG BHS42S2-S, LG BHS42S1-W – Blu-ray / DVD Home Cinema System software updating, Power board circuit diagram, power board troubleshooting
AMPLIFIERPower output (3 Ω/ 4 Ω), (RMS), THD 10 %
Total 330 W
Front 42 W x 2
Center 42 W
Rear 42 W x 2
Sub-Woofer 120 W (Passive)
SOFTWARE UPGRADE
* Burn a DVD recordable disc or USB with a file that is named to “LG_HB_7000M51.ROM”.
* Insert a upgrading disc or USB.
* Show help message for disc upgrade
* Burn a DVD recordable disc or USB with a file that is named to “LG_HB_7000M51.ROM”.
* Insert a upgrading disc or USB.
* Show help message for disc upgrade
Press Enter key to upgrade.
Press Enter key to upgrade and it will show progress
information.
After completing upgrade then power is off.
HIDDEN
KEY MODE
No power problems
Power board: EAX64755401 - schematic
Click on the pictures to magnify
