No Color; No Vertical Deflection - Daewoo DTQ-20U4SC Service Manual

TROUBLESHOOTING GUIDE

5. NO COLOR

Check CVBS Waveform
R OUT
G OUT
B OUT
Check R/G/B signal

6. NO VERTICAL DEFLECTION

#61
I501
VDP3130Y
#37
#38
#39
I501
VDP3130Y
Vertical OUTPUT
Check Vertical signal
#51
#52
Vsup 5V
#58
Vsup 5V
#36
Vsup 3.3V
#16
#15
Check the Voltage
X501
#51
#52
#31
Vertical D.Y
-61-
Check the crystal
X501
Check the Voltage(27V)
I301 Vcc 27V
#6 Vcc
#5 Vin
I301
LA7848
#2 Vout
Check Vout signal
Appendix