Advertisement
four、no picture：
no picture only
VGA
check AD9883A
No
30、31 pin sync
Yes
abnormality
change AD9883A
check if there
is a icon to
display when
source switches
check sync face
lifting circuit
output abnormality
and I/O sync
wave
input abnormality
check sync face
lifting circuit
check VGA jack
and peripherally
circuit
CHECK PW113 G-Port，
No
（31）-（35） pin，
changePW113
other part is
no picture only
DVI
check SiI161B/169 （44）（48）
（47）（42）pin GCLK、GHS、
GVS、GFBK
all abnormality
1、check signal source
checkSiI161B/169
control signal
3、change Sii161B
46
following
part abnormality
2、DVI jack
Advertisement
