Haier DX-LCDTV19, Service Manual, Page: 14 / 34

2.2 White
White Screen
Check signal output of U5/RTD2023B
Check voltage between
U25/SM5964 3thQ24 or
check U25
Check voltage of Q24
Turn to power suppy
trouble shorting
Check LCD or
Panel Connector
Check U5
1,Power supply
2,Time circuit
Check Q24 0~3.3V
（
5V or 12V
），
according to the volitage
）
N
Y
Check power supply (for panel)
Check voltage of Q24
Check Q24 （ be care
for the shorting
）
Check circuit between
CN8 and CN9
N
N
N
N Y
Y
Y
Y