LG NP8340, Service Manual

Page: 22 / 55

3-3
< Main board top view >
IC805 IC805
ONE POINT REPAIR GUIDE
2. IF NOT BOOTING WHEN YOU TURN ON THE SET (LED DOES NOT TURN ON).
2-1. IC805 (NO 5.2 VA)
2-1-1. Solution
Replace IC805 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Please Check 19 VA of IC805 Pin2 (IN).
2) If 19 VA is abnormal, follow the stage 1-1 at the previous page.
3) If 19 VA is OK, but 5.2 VA is abnormal, check the parts (L813, L814, R843, R845, R846, R847, R604,
R606, R607). And then change the weird one.
2-1-3. Service hint (Any picture / Remark)