The RF signal is normal.?
TN1 supply power normally ?
th
th
The 4 and 5 pin
of TN1 have data?
PIN12 o f T N1have
the output signal?
N
Y
N
Y
Y
N
In the TV mode, it don't
search tv and no picture
Getting rid of function's trouble
1.fuction part(TV video)
12
MANI
BOARD
FAULT
JUDGMENT
Y
N
Maint en anc e E56
、
Q16
、
L9 and rel ative
c o m p o n e n t .
Maintenance TN1 and the
relative p eripheral c ircuit.
Maint en anc e
U 1 4
、
Q 1 7
M a i n t e n a n c e i t s
pow er supp ly ci rcu it
In the PC mode ,have it ?
th
The 11 PIN of TN1 have output signal ?
Maintenance R302
、
C 1 8 6
、
C 1 1 6
N
Y
N
Y
In the TV mode, it don't
search tv and no picture
Getting rid of function's trouble
2.fuction part(TV audio)
TN1 have damaged
，
r e p l a c e t h e T N 1
Reference
service
flow
of
no
sound
Mai nt ena nce The
RF si gna l is no rmal.
