LG BP630 Service Manual page 53

When you turn on your set, it will display "HELLO" on front panel, and it will not boot-up normally.
3-7. IC601, IC602 (DDR3 MEMORY)
3-7-1. Solution
Replace IC601, IC602 on main board.
3-7-2. How to troubleshoot (Countermeasure)
1) Please check 0.75 V of DDR3_VREF.(between C645 and C646).
Please check 0.75 V of DDR3_VREF.(between C647 and C648).
Please check 1.5 V of C601.
2) If it doesn't work even though IC150, IC151, IC152, IC153 are no problem,
IC601, IC602 (DDR memory) could have problem.
3) After changing it, if the set is still not booting:
- Check MT8560C IC(IC501) refer to item 3-8.
- Check main board refer to item 3-9.
3-7-3. Service hint (Any picture / Remark)
IC602
ONE POINT REPAIR GUIDE
IC601
3-36
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