![background image](http://html.mh-extra.com/html/viewsonic/vlcds27955-1w/vlcds27955-1w_service-manual_1021334013.webp)
Picture Visible
A
Picture only
appear one
second
Stable
picture &
size correct
C
Yes
No
Picture
jumping
Picture
over-scaler
Picture
distortion
Incorrect panel type or cable
(1)Check OSD
information if mode
error
(2)H/V sync input
tolerance too big
Absent of H/V
sync of scaler O/P
or short CKT
OSD
distorted
Backlight off
after one
second
Picture normal
then panel
burn
(1)DC power source no enough
(2)Backlight wire short CKT
(3)Inverter shut down
(1)LVDS no enable or enable polarity error
(2)LVDS CKT not assembled ok
(3)Scaler O/P CKT not assembled ok
Yes
No
Yes
No
Panel power abnormal
Yes
No
No
No
Yes
Yes
No
No Yes
10
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VG510b/s