LG BD530 Service Manual page 54

ONE POINT REPAIR INSTRUCTION
When you turn on your set, it will display "HELLO" on front panel, and it will not boot-
up normally.
3-8. IC601 ~ IC602 (DDR3 MEMORY)
3-8-1. Solution
Replace IC601 ~ IC602 on main board.
3-8-2. How to troubleshoot (Countermeasure)
1) Please check 0.75 V of DDR2_0_VREF.(between C645 and C646).
Please check 0.75 V of DDR2_1_VREF.(between C647 and C648).
Please check 1.5 V of C632.
2) If it doesn't work even though IC201,IC202,IC203, IC207 are no problem,
IC601, IC602(DDR memory) could have problem.
3) After changing it, if the set is still not booting:
- Check MT8550L IC(IC501) refer to item 3-8.
- Check main board refer to item 3-9.
3-8-3. Service hint (Any picture / Remark)
DDR2_0_VREF
< Main board bottom view >
IC602
IC601
< Main board top view >
3-39
DDR2_1_VREF
< Main board top view >