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