Genius SW-HF 5.1 6000 - 1.2.6 Woofer no sound

Service Guide SW-HF 5.1 6000
1.2.6 Woofer no sound
Problem
Analyze and
identify the
causes
Solutions
-
Version 1.0 Page 12 of 36
Woofer no sound
PCB
dry-soldered,
broken, or
short
-circuited
Poor connection
of sub speaker
cables and
jacks, or
defective
speaker cables,
jacks or woofer
driver units
1. Defective IC1, IC2 or
components relating to IC1
and IC2 on INPUT PCB
2. Defective IC6 or
components relating to IC6
on AMP PCB
3. Defective IC1, IC2 on
SWAMP PCB
Repair
Check and
replace
defective IC or
components
Defective
connection of
woofer
audio cables, or
JACK
disconnected
from PCB or
defective
Reconnect
or replace
Reconnect
or replace
Power-supply
part on the
SWAMP PCB
defective
Check and replace
defective
components