LG HT904TA Service Manual page 11

2. Front circuit (/2)
Power on.
YES
Red LED turn off?
YES
Is the Digitron on
correctly?
YES
Check if all
buttons are ok?
YES
Check if the remote
control is ok?
YES
Front B/D ok.
*1 : CN301 : WITH I-POD DOCKING
CN304 : W/0 I-POD DOCKING
*2 : PN106 Pins.
PIN1 : -34 VKK, PIN2 : -28 FL+, PIN3 : -32 FL-,
PIN12 : +5.6VA, PIN13 : +5V
Check if
NO
CN301 (or CN304)
and PN301 are ok?
(*1)
NO
Check if the front
power is ok?(*2)
NO

NO
2
Check if
DIS301 is ok?
2-2
NO
YES
NO
YES
NO
Check pattern and resoldering
Reconnect it.
Refer to SMPS part.