Hisense LHD32D33EU - Display Troubleshooting (White Screen)

5.3.4. Display Troubleshooting (white screen )
White screen
Chec
k
if VCC_Panel voltage is o
k
?(the
Pin1~3 of CN12?
N
Chec
k
the S pole of
QM2 is 5V or 12V
Y
Chec
k
if the LVDS cable is
right and if well connected
with the board
Y
Chec
k
if G pole
voltage of QM2 is low
N
Chec
k
if U1 jumpe
r
contact
well
N
Change the
LVDS cable
Y
Chec
k
if the
panel is ok
N
Chec
k
if B pole of QM1 is
high (0.6V) or front end of
Y
Change QM2
N
Change CN10 o
r
jumper
Y
Chec
k
powe
r
supply
Y
Change U1
N
Change panel
RM1 is 3.3V
N
Change U1
Y
Change QM1o
r
RM1