Hisense LHD32D33EU - Display Troubleshooting (Blank Screen)

5.3.3. Display Troubleshooting (blan
k
screen or show nothing)
Indicato
r
light on?
N
Y
Chec
k
if UD1 Pin 1 is 5V
Chec
k
if powe
r
supply is o
k
(such as 5V,1.0V,1.5V,3.3V)
Y
Chec
k
if R66 exist 560-600
MHZ clock
N
Chec
k
if external powe
r
supply is ok ?
Y
Chec
k
if UL2 have 3.3V
output
N
Chec
k
unmoral powe
r
supply module
N
Chec
k
if Y1 o
r
FLASH is OK?
Y
Chec
k
if R42 is O
K
N
Chec
k
UL2
Y
Chec
k
if U5 FLASH have
N
Change FLASH
or Y1
NY
power circuit upgrade or upgrade to death
N
Change IC
chip of UL2
Y
Upgrade o
r
change FLASH
Change main chip
U1
Change R42