Booting When Power On The Set - LG DM5360K Service Manual

2. NO BOOTING WHEN POWER ON THE SET
The set doesn't work when press the power button on the display board or the remote control.
2-1. MCU (IC100)
2-1-1. Solution
Please check and replace IC100 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Check 5.1 V to CON103 in standby mode.
- If there is no 5.1 V, check the SMPS.
2) Check 12 V, 5.1 V and PVDD when power on the set.
- If the set doesn't work regardless of what the KEY1(R123), KEY2(R125) changes high to low while
pressing the power button.
- If you can not power on the set, replace IC100 with a new one on the MAIN board.
2-1-3. Service hint (Any picture/ Remark)
ONE POINT REPAIR GUIDE
< MAIN board top view >
IC100 IC100
KEY2 KEY2
(R115) (R115)
3-4
KEY1 KEY1
(R123) (R123)