Samsung LT15M23C Service Manual page 18

5 Troubleshooting
Yes
Does proper DC 5V_P
appear
6
at Pin 2 of IC104?
Yes
Does proper DC 9V_S
7
appear at FT127?
Yes
Does proper DC B5V
8
appear at FT131?
Yes
Check IC704 and IC802.
5-2
No
Check IC104.
No
Check IC110.
No
Check IC108.
LT15M23C