1
、
Check ED3for 12V,
2
、
Check ED1 for 5V_STB
1
、
Check power board
NG
1.Check CL7 for 3.3V
OK
NG
1.Check the circuit of UL1.
OK
NG
——
TV Power supply Trouble
OK
1
、
check CD3 for 1.5V
NG
1
、
Check the circuit of UD1.
1
、
POWER ON and
Check ED2 for 5V
2
、
Check CD11 for
1.2V
3
、
Check CD11
for1.05V
1
、
check the circuit of QD1
and power board;
2
、
check the circuit of UD3.
3
、
check the circuit of UD6.
Power supply
