29
VSX-1128-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
E
Only HDMI IN4, IN6 and IN7
are no sound?
HDMI in on rear ->
Rear HDMI inputs ->
output OK?
Front HDMI in ->
Repair or replace the
D-MAIN Assy.
Repair IC1801 (AK4588VQ) and its
peripheral circuit or replace the
D-MAIN Assy.
No
No
Yes
Replace HDMI cable between
FHDMI Assy and D-MAIN Assy
or replace the FHDMI Assy.
Yes
No Picture
No Picture
This is just for general reference and does not including every single case.
No
No
Yes
Yes
Yes
Front Video in ->
No Composite out
Component in ->
No Component out
Rear HDMI in ->
No HDMI out
Front HDMI in ->
No HDMI out
Composite in ->
No Composite out or
no zone2 Video out
Rear Composite in ->
Composite out?
HDMI IN1, BD IN, IN2 and IN3
-> HDMI out?
Composite (Component) in ->
No HDMI out
Check CN902 pins 1, 3, 5, 7
signals on the VIDEO Assy.
No GUI
Replace the D-MAIN Assy.
No Zone2 OSD
Analog Video In -> Monitor Out?
Replace HDMI cable from FHDMI
Assy or replace the FHDMI Assy.
Yes
Replace IC1007, Q1012, Q1013
or replace the VIDEO Assy.
Replace the FRONT Assy.
Replace the D-MAIN Assy.
Replace the D-MAIN Assy.
Replace the D-MAIN Assy.
No
No Replace the VIDEO Assy
or replace the D-MAIN Assy.
Replace IC1001 or
replace the VIDEO Assy.
Replace the D-MAIN Assy.
No
Replace IC101 or replace the
VIDEO Assy.