Genius SP-HF1255A - 1.2.4 Noise

Service Guide SP-HF1255A
10
1.2.4 Noise
Problem
Analyze
and identify
the causes
Solutions
Noise
Filter capacitor
/diode
dry-soldered or
damaged,
please check
C1, C14, C31，
C20，C9, 1D1，
1D2,1D3, 1D4
in AMP
defective or
not;
The power
supply of each
IC is normal or
not
Or caused by
vibration from too
long lead wire of
driver units
Driver units damaged
Woofer cabinet leaks,
closed not well
Repair
Check and
replace
Repair or
replace