Genius SP-HF1255A - 1.2.7 VR, headphone jack or line-in jack abnormal

Service Guide SP-HF1255A
13
1.2.7 VR, headphone jack or line-in jack abnormal
Problem
Analyze
and identify
the causes
Solutions
VR, headphone jack or line-in jack abnormal
VR:
Defective VR may cause VR3
in
1255A AMP PCB or
VR1/VR2 in
SP-HF1255A AMP PCBA
having
scratching sound when rotatin
Check and replace
Jack:
N1 or 1CN4 in 1255A AMP
PCBA
defective
Check and replace