Sony KD-55A8F - 2.1 LED Blinking: 3 x (DC Alert Error)

(Supplementary
information)
2.1 LED Blinking: 3x (DC Alert Error)
3-time blinking
(DC Alert)
Check “+5.0V_VBUS”
at C431 on BM2A board
4.959V<Voltage<5.285V?
Retry
OK
NG
BM2A Board
Check “POWER_MAIN”
at pin 17/19 of CN400
on BM2A board,
Voltage = 18.0～20.0V or
22.5～24.5V ?
NG
G Board
OK
Detail of 3x LED Blinking
Trinity3 Board: BM2A
Error Item Number of STBY
LED flashing
Description
Trinity DC_ALERT 3 Main board 5V power rail monitoring
AUD_ERR 3 Audio amp error detection
27
BM2A
SYSSET
2018/03/1622:32:44(GMT+09:00)