JVC TH-G40C Service Manual page 21

5.2 Front circuit
Power on.
Blue LED turn off?
Is the Digitron on
correctly?
Check if all
buttons are ok?
Check if the remote
control is ok?
Front B/D ok.
YES
NO
PN301 is ok?
YES
NO
Check if the front
YES
DIS301 is ok?
NO
power part of the
YES
R345~R350, R154
Refer to MICOM circuit.
NO
Check if the power
part of the front is ok?
YES
Check if the remote
control waveform of PN301
Check if RC2
voltage is ok(5V)?
Resolder or Replace RC2.
NO
Check if
YES
NO
power is ok?
YES
NO
Check if
Check if the NO
front is ok?
YES
NO
Check if
ok?
YES
Replace R345 ~ R350, R154.
NO
YES
NO
pin11 is ok?
YES
NO
YES
Reconnect it.
Refer to SMPS part.
Check pattern and resoldering
Refer to power(SMPS).
Refer to power(SMPS).
Refer to MICOM circuit.
Check RM circuit
(No.MB672<Rev.002>)1-21