Trouble Shooting Charts; No Power - Daewoo DTQ-14U1FS/20U1FS Service Manual

TROUBLESHOOTING GUIDE

1. NO POWER

Check
F801(125V 4A)
PCW1
Check
waveform
R809
R802
D
Q801
G
FET
S
R803
R804
ST-BY
<DRAIN OF Q801>
FROM
FBT 10V
F801
L801
T801
B+
C804
L802
C805
I801
#10
#1
#14
#3
#5
#11
PW ON
R416
RLY01
R801
D807
133V
R814
C814
D808
45V
R820
C815
DR.TRNS B+
D813
12V
C812 R817
R818
D812
5.6Vz
12V
Check
Voltage
133V
FROM U-COM
#42 PW ON/0FF
Check
Voltage
21
Check
D801
D801(PBS208GU)
Check
R801(7W 2.2)
TO I101 #34
OCP
C819
Check
Voltage
133V
C820
TUNER
33V
Check
Voltage
45V
SOUND B+
12V
ST-BY
Q805
5V
C706
FROM MICOM #42
PW ON : H
PW OFF : L
Check
Voltage