Audiovox FPE3705 - 37" LCD TV, Руководство по обслуживанию

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2
2
2. raster, but no picture
Check if the unit
can operation?
Check if the all
channels have signal?
Replacing
CPU board
Enter factory-menu,
operation CLEAR
EEPROM, then turn
off , turn on again , it if
display picture.
Adjust CPU board
again
Which is no
signal of
channels
Replacing CPU
board
Testing power
supply (+
12
V) of
video processing
board
Replacing power
supply board
Check if PIN2
1VPP signal
and noise wave
of P32?
Replacing
TUNER01
Check if PIN56
15.734KHz
sync signal of
U29?
Replacing U29
Display
“NO-SIGNAL”
Testing
1VPP signal
of TP1,
TP2, TP3.
Replacing CPU board
Replacing U13
Testing
PIN65 of
U30 SYNC
signal
Replacing
U30
no
yes
no
yes
no
no yes
VGA/DVI
TV
YPRPB
yes
yes
no
no
yes
no
no
no
yes
Replacing
N1
yes