Advertisement
AKAI AFT-505 (5" TFT LCD COLOR TV) Service Manual
4、Fault Description: Have Sound But Have No Picture
NO
Check the power of
the illuminant against
the background.
OK
Illuminant
pipe damaged
NO
Reset the AV &
TV condition
Start
Check the power
YES
Check whether the illuminant against
the background is shine in normal.
YES
Check whether each button
work in normal and show
OSD on screen.
YES
Check whether AV & TV
is normally chose.
YES
Check IC U7 RF passage
and tuner circuitry
NO
Check whether IC U7 (3),
(4), (12), (13), (39), (40),
(42) plugs all work in
normal.
YES
Check whether IC U7 (14),
(15), (16) plugs all have RGB
signal outpu
t
Replace IC U7
YES
Check IC 3Y26 & around
applicative circuitry
Page 4 of 5
N
O
Check
power
supply circuitry
NO
Advertisement
