No Sound - Genius SP-HF1255A Service Manual

Service Guide

1.2.2 No Sound

Problem
Analyze
and identify
PCB
the causes
short-circuited,
dry soldered or
broken
Solutions
Repair or
Replace
No Sound
CN1 and CN2 in
AMP board is not
properly connected
Repair or
Replace
8
SP-HF1255A
Or caused by the
following defective
components
1. U1, U2 in AMP
PCBA
2. VR1，N2，1CN4 in
SP-HF1255A AMP
PCBA
Repair,
re-solder or
Replace