LG LST-5600A Service Manual page 16

(C) Reset check
YES
IC107(3) is reset?
YES
IC106(4) is reset? Fig.04
YES
IC201(29, 56, 61, 64, 75) are reset?
NO
NO
NO
Fig.04 IC106(4) : Reset signal
3-7
Check IC107
Check IC106
Check IC101 & 201