Sony KD-55X8 G Series Service Manual page 53

2.2 LED Blinking: 3x (Audio Error)
BSL-PWB
TV Business Division
(1) VDD-GND short check
Measure impedance between VDD and GND at
capacitor C3312.
impedance is <100Ω → NG
(2) 3.3V_Audio short check
Measure impedance between 3.3V and GND at
C3279.
impedance is <100Ω → NG
(3) Fuse open check
Measure impedance of fuse
F3202/F3201 5A (12.7V or 19.5V)
fuse open → NG
F3202/
F3201
(4) POWER_AU check
Measure voltage at capacitor C3312.
Voltage is < 12.7V (G-Board) or 19.5V (L-
Board) → NG
C327
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(Supplementary
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information)