Speaker No Sound - Acer AT4230B Service Manual

Speaker no Sound

Audio R/L source
Video can display?
32
H
had plug in?
Mute turn off
Volume set 50
Speaker R/L
cable plug in?
Speaker have
sound output
END
Check audio R/L
no
Source cable
no
Check video cable or
replace video cable
no
Check speaker cable or
Replace speaker cable
no
Replace IO/B or speaker
Speaker have
Sound out put?
no
Replace M/B
Capter3