Sony KDL-32EX725 / KDL-40EX725 / KDL-55EX725 Service Manual ▷ View online
KDL-32EX725/40EX725/55EX725
39
SECTION 5 - FLOW CHARTS AND DIAGRAMS
STANDBY LED BLINKING
Unit Shuts OFF
RED LED
Blinking
2X Blink Pattern
REG12V Error
Check
REG12V
*Before Shutdown
Yes
No
Check
Power-ON
*Before Shutdown
Is voltage
12V
Present?
Is
voltage
3V
Present
?
Yes
No
Replace
Main Board
Replace
Power Supply
Board
Replace
Power Supply
Board
FIGURE 5-3. 2 BLINK ERROR
KDL-32EX725/40EX725/55EX725
40
SECTION 5 - FLOW CHARTS AND DIAGRAMS
3X Blink Pattern
Audio Error
Yes
Check
Speakers &
Connections
Do
Speakers
Measure
8 ohms
?
No
Replace
Speaker(s)
Check
AU12V
*Before Shutdown
Is voltage
12V
Present?
No
Yes
Replace
Power Supply
Board
Replace
Main Board
Unit Shuts OFF
RED LED
Blinking
FIGURE 5-4. 3 BLINK ERROR
KDL-32EX725/40EX725/55EX725
41
SECTION 5 - FLOW CHARTS AND DIAGRAMS
4X Blink Pattern
(Balancer Error)
Unit Shuts OFF
RED LED
Blinking
Is 4X still
occuring
?
Replace
LCD Panel
Assembly
Replace
Main Board
No
Yes
Problem
Solved
FIGURE 5-5. 4 BLINK ERROR
KDL-32EX725/40EX725/55EX725
42
SECTION 5 - FLOW CHARTS AND DIAGRAMS
5X Blink Pattern
TCON/HFR Error
Is
connection
OK?
Repair
Connection
No
Yes
Check
LVDS connection
between
LCD Panel (TCON) & BATV Brds
Check
TCON 12V supply
Is
12V Present
?
No
Yes
Check
TCON ON
Signal
Is
3V Present
?
Yes
No
Replace
Main Board
Replace
TCON Board
Replace
Power Supply
Board
Unit Shuts OFF
RED LED
Blinking
FIGURE 5-6. 5 BLINK ERROR
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