LG NP8340, Service Manual

Page: 24 / 55

3-5
ONE POINT REPAIR GUIDE
4. NO SOUND FROM THE SPEAKER.
4-1. IC700, IC701 (NO 19 VA / 3.3 V)
4-1-1. Solution
Replace IC700, IC701 on MAIN board.
4-1-2. How to troubleshoot (Countermeasure)
1) Please check 19 VA (PVDD) of C715, C735 and 3.3 V (DVDD) of L706.
2) If 19 VA is abnormal, follow the stage 1-1 at the previous page.
3) If 3.3 V is abnormal, follow the stage 4-1 at the next page.
4) If 19 VA, 3.3 V are OK but no sound from the speaker, replace IC700, IC701.
5) When you followed above step but it doesn’t work, check the around parts (RLC).
4-1-3. Service hint (Any picture / Remark)
< Main board bottom view >
IC701 IC701
IC700 IC700