LG LHD625 Service Manual page 45

When you turn on your set, it will display "WELCOME" on front panel, and it will not boot-up normally.
2-5. IC503 (SDRAM MEMORY)
2-5-1. Solution
Replace IC503 on MAIN board.
2-5-2. How to troubleshoot (Countermeasure)
1) Please check 3.3 V IC503.
2) If it doesn't work even though IC105 is no problem, IC503 (DDR memory) could have problem.
3) After changing it, if the set is still not booting :
- Check MT1389 IC (IC500) refer to item 2-6.
2-5-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
< MAIN board bottom view >
IC503 IC503
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