LG BD550 Service Manual page 88

ONE POINT REPAIR INSTRUCTION
When you turn on your BD-P, it will display "Hello" or "Please wait" message con-
tinuously on front panel, and it will not boot-up normally
3-3. IC604
3-3-1. Solution
replace ic604 on main board.
3-3-2. How to troubleshoot (Countermeasure)
1) Please check the ic604 on your eyes.
2) check the /ce signal of #9 pin of ic604.
First, if the /ce signal is not operating normally during booting, try to change ic604.
3) after changing it, if the set is still not booting, check MPeG ic(ic500) or ddr ic.
3-3-3. Service hint (Any picture / Remark)
IC604
< Main board top view >
3-73
2010