Sharp LC-32LE345T, Service Manual

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LC-32LE345T
6 – 3
Audio Trouble (No Sound)
No Sound
Check if the volume is rightly set or if
mute function is off
Check if the output signal on the pin1 &
Pin4 of CNA1 is normal
Set it rightly
Check the speaker and if the speaker NG,
replace with the new speaker
OK
OK
NG
NG
OK
Change Main PWB
Function Trouble (PC)
p p
PC source No signal
Check if the VGA cable is OK? Change a VGA cable
Check if the VS and HS signals are OK? Change Main PWB
Check if the R G B signals are OK? Change Main PWB
Check the software
OK
OK
OK
OK
NG
NG
NG