Sony KD-55A8F - 2.7 LED BLINKING: 7 x (Temperature Error); 2.8 LED BLINKING: 8 x (4 KBE Error)

2.7 LED BLINKING: 7x (Temperature Error)
7-time blinking
BM2A Board
Yes
Panel
NG
Replace BM2A
Board, and Aging a few
hours
Setting
circumstance is OK?
Temperature,
Ventilation, etc.
Set to another
location, etc.
No
Symptom
improvement
BM2A
2.8 LED BLINKING: 8x (4KBE Error)
8-time blinking
Replace
BM2A Board
35
BM2A
SYSSET
2018/03/1622:32:44(GMT+09:00)