Read JBL SB 350 Service Manual online
SUBWOOFER NO OUTPUT
SUBWOOFER
NO OUTPUT
go
Check whether have
19V on CON100
Check whether there is
3.3V
Yes
No
Check whether power
board or CON100 cable
well connection
No
Replace U102
Check whether there is
signal on pin38,39 of
U201
Yes
Yes
Replace U201
No
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