Genius SW-2.1 355 - 1.2.4 Left Channel No Sound

S
e
rvi
ce G
ui
de
SW-2.1 355
1.
2.
4 Left chann
el
no so
un
d
Problem
Analyze and
identify the
causes
Solutions
Version
1.0
Page
10
of
20
Input cable
damaged or
defective
Left Speaker cable
damaged or
defective
Left driver unit
dry-soldered or
defective
1. Defective JK1, JK2
2. Defective assembled line
between CON1 and CON2
3. Defective or dry-soldered
R7
，
R2
，
C2
，
R20
，
C4
，
C11
，
U1
，
VR1
Repair or
replace
Repair or
replace
Re-connect,
replace or repair
PCB damaged,
dry-soldered or
short-circuited
short-circuited
Repair or
replace
Left channel no sound