LG BH9530TW Service Manual page 52

When you turn on your set, it will display "WELCOME" on front panel, and it will not boot-up normally.
2-9. IC501 (MPEG IC)
2-9-1. Solution
Replace IC501 on MAIN board.
2-9-2. How to troubleshoot (Countermeasure)
1) Please check 1.2 V of C528 on MAIN board.
Please check 3.3 V of C501 on MAIN board.
Please check 1.5 V of C511 on MAIN board.
2) If it doesn't work even though IC150, IC155 are no problem,
IC501 MT8580 could have problem.
3) After changing it, if the set is still no booting, check MAIN board refer to item 2-10.
2-9-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
C528 (1.2 V)
C511 (1.5 V)
< MAIN board bottom view >
IC501
< MAIN board top view >
2-37
C501 (3.3 V)