LG LHD625 Service Manual page 46

When you turn on your set, it will display "WELCOME" on front panel, and it will not boot-up normally.
2-6. IC500 (MPEG IC)
2-6-1. Solution
Replace IC500 on MAIN board.
2-6-2. How to troubleshoot (Countermeasure)
1) Please Check 1.2 V of C510 on main board.
Please Check 3.3 V of C548 on main board.
2) If it doesn't work even though IC105 is no problem, IC500 (MT1389) could have problem.
2-6-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
C510 (1.2 V) C510 (1.2 V)
< MAIN board top view >
2-33
C548 (3.3 V) C548 (3.3 V)