Sony KD-55X7 E Series - 3.3: 4 x Blinking - Panel Power Error

25
BLM Board
Yes
No
*Check Adaptor /
G board connection
Check voltage at
+12.5V_TCON
10.8V-13.2V
End
No
Check PANEL_PWR
3.00V-3.33V?
Yes
No
Check +12.5V_TCON
10.8V-13.2V?
RC ON
Suspected LD board /G
Board side issue.
Replace PSU unit board
TV in standby mode?
Yes
No
Replace Main IC / B-
Board
Start
TV boot up normally?
No
Yes
*Check Adaptor / G-board connection
KC 43/49 = LD board & Adaptor
KC 55/65 = G-board
Adaptor: Remove and reinsert Harness from LD board  Main board
G-board: Remove and reinsert Harness from Gboard  Main board
3.3 : 4x Blinking – Panel Power Error