No Power, Led (Indicator) Unlighted - Genius SP-HF1255A Service Manual

Service Guide
Attention
Please follow the numbered sequence marked within parenthesis given in individual
Flow chat in that this is the best-recommended sequence to rectify the problems.

1.2.1 No power, LED (indicator) unlighted

Problem
Analyze
and
identify
Defective transformer
the
Defective or damaged AC
causes
cable or power switch
Solutions
Repair or replace
No power，LED （indicator）unlighted
Or caused by the following:
1. Transformer secondary wire loosely
connected with 1CN1
SP-HF1255A AMPA.
2. Copper foil of SP-HF1255A AMP
PCBA broken
Re-solder or replace
7
SP-HF1255A
jack in