LG S92T2-C Service Manual page 47

When you turn on your set, it will display "WELCOME" on front panel, and it will not boot-up normally.
2-6. IC504 (NAND FLASH MEMORY)
2-6-1. Solution
Replace IC504 on MAIN board.
2-6-2. How to troubleshoot (Countermeasure)
1) Please check physical status of IC504 on your eyes.
2) Check the VCC (3.3 V) of IC504 and if it's normal please replace IC504.
(Please make sure IC504 has proper program.)
3) After changing it, if the set is still not booting:
- Check DDR IC (IC502, IC503) refer to item 2-7.
- Check MT8560 IC (IC501) refer to item 2-8.
2-6-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
< MAIN board bottom view >
2-34
IC504