Genius SW-2.1 355 - 1.2.6 Noise Troubleshooting

S
e
rvi
ce G
ui
de
SW-2.1 355
1.2.6. Noise
Problem
Analyze and
identify the
causes
Solutions
Version
1.0
Page
12
of
20
Check and replace
Repair or replace
Driver units
damaged
Vibration from too
long lead wire of
driver units
Repair
1. D1-D4
，
C29 dry-soldered
or defective
2. U1, U2, U3 or the
components around
dry-soldered or defective
3. PCB broken or dry-soldered
Noise