56
LC-26GA5E
LC-32GA5E
LC-26GA6E/LC-26BV6E
LC-32GA6E/LC-32BV6E
LC-37GA6E
The backlight does not go on.
NO
YES
NO
NO
YES
NO
YES
YES
Inside the power supply unit: Has the fuse
F705 1A on the inverter circuit burnt out?
Is power supplied to the I
NVERTER PWB?
(Vin, 3.5VAC)
Are PWBs
properly connected with
harnesses?
(Power supply unit, INVERTER PWB,
INVERTER-G
ND PWB, LCD
CONTROLL
ER PWB)
Connect properly
or replace harnesses.
Check the inverter circuit behind the burnt
fuse.
Inside the power
supply unit: Is each
control signal
sent to CN704? (Pin (11)
of
OFL1, pin (13) of INV.OSC)
Check the connect
ors of each fluorescen
t
lamp and inv
erter circuit.
Check IC4501 (LCD CONT
ROL) and its
peripheral circuits.
Troubleshooting Table (continued)
www.ma163.com 电子技术资料网