-7-
5. Hardware Trouble shooting
5-1) Power Supply Trouble
Check E1 for 5V and E2 for 3.3V output ?
Y
N
Check power line or power supply
Put on the TV, Check for C10 ,C16,E5 E3 for 5V
output
Y
N
Check power board
for 5V output
Check if U2 for 3.3V and
U3 for 2.5V output?
Y
N
for 5V output
Check the circuit
Check U4 for 1.2V
Y
N
Y
N
of U2 ,U3
Check if the power
on pin of power
board for 5V?
OK
Check U4 for 1.2V
output
Y
N
U4/DC-DC IC damaged
L2/10μH is damaged or
false welding
It ’s normal but
the voltage is
high
It’s normal but
the voltage is
Low
E6 i d
d
th
Check if pin No.4 for U4/(DC-DC chip) is
false welding or U4 is damaged
E6 is damaged or the
loader is in short
circuit
All manuals and user guides at all-guides.com
