TFT-613CTV Service Manual Page 1 of 5
1、Fault Description：Showing Picture On Screen But No Sound
Confirm the volume isn’t in silent mode before check.
Start
Check IC U11 (5) plug
has audio output or not
YES
NO
Check jack J140 has
audio signal or not
NO
Check IC U11 has 12V
power supply
NO YES
Check power
YES
supply circuitry
Jack J5
damaged
Speaker
damaged
YES
Check IC U11 (3)
plug has audio signal
input or not
NO
Check IC U11 and
circumjacent circuitry
YES
Check IC U10 (51)
plug has audio signal
output or not
NO
Check R152 and C135
Check IC U10, the part of
accompaniment way and
circumjacent circuitry
TFT-613CTV Service Manual Page 2 of 5
2、Fault Description: No Remote Control
Start
Check the battery of remote
control is full of power or not
and remote control has been
damaged or not
Yes
No
Yes
Is it away from TV
too far
Replace the battery and
repair the remote control
Narrow the distance
No
Check the receiver (3) plug of
remote control has 5V power supply
No
NO
Check receiver (2) plug of
remote control has been
earthed correctly or not
Yes
Check power supply circuitry
Earth
Yes
Check the receiver (1)
plug of remote control
has signal output
NO
Receiver damaged
Yes
Check IC U7 (24) has signal
input or not and around
applicative circuitry
Loading...