4.Function Trouble
4.1 TV
TV can not search/No picture
Check RF signal input
N
Examine
and repair
RF device
Y
Check voltage T1/TDQ-6H3PIN6 for 5V
Examine
and repair
The power
supply net
Y N
Check voltage T1 PIN3 for 0V
Examine
and repair
R267/0
Ω
N
Y
Check I
2
C signal T1 PIN4,5
Check I
2
C net
(connect with
U25/SM5964
PIN16,17
N
Y
Check signal T1 PIN11
N
Check the net between
T1 PIN11 and
U21 PIN24,25
;Power supply for U21
Y
Check voltage T1 PIN1 >V
Examine and
repair
The circuit
N
Y
Change
T1/TDQ-6H3
Check voltage T1 PIN9 for 33V
Examine
and repair
33V
circuit
Y N
Summary of Contents for LV1913
Page 1: ...LV1913 ...
