LG LAS950M Service Manual page 26

3. NO SOUND
3-1. WIRELESS
3-1-1. Solution
Replace IC102 on MAIN board.
3-1-2. How to troubleshoot (Countermeasure)
1) Please check externally status of Wireless module cable connection on your eyes.
(at CN100 and Wireless module)
2) Please check 3.3 V of WLS_3.3V (at L101).
If 3.3 V is OK, please check SPI signal (WL_SPI_CS/DO/WP/DI/CLK) of IC102 (pin1, 2, 3, 5, 6).
3) If you can't have no signal, please replace IC102.
4) If 3) is ok, and proceed S/W update (Main set, Wireless Subwoofer) when set is paired.
3-1-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
L101 L101
< MAIN board top view >
CN100 CN100
2-7