Read Sony KLV-32D300A / KLV-40D300A / KLV-46D300A Service Manual online
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KL
V
V
-32/40/46D300A
RM-GA008
G1H Board Main Converter Trouble Shooting
Check Q6109, 6110 and
around parts, IC6104
Main Converter fail
R6147 OPEN?
IC6104 8 pin
About 17V?
Check secondary side
circuit, T6101,
PH6104, IC6202
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Main control
IC Vcc voltage
confirmation
IC Vcc voltage
confirmation
Check fuse
resistor
resistor
IC6104, C6131,
R6152, 6153 fail
IC6104 15 pin or
C6137 SHORT
When turn on IC6104 pin 3
saw waveform appear?
R6148 Open?
Check resistor
Check PH6104 and
around circuit, IC6104
When turn on IC6104 12 pin
more than 3V?
Check C6158, D6133
T6102 Disconnection of
1pin-3pin winding
Check Timer
Check Q6109, 6110 and
around parts, IC6104
Check Q6107,
Q6108, PH6103
When turn on IC6104 pin 20
Pulse waveform appear?
Voltage of C6152
about 18V?
Check STBY Voltage
Check switching
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