Philips 19B4LPCS/00 - Repair Flow Chart

Repair Flow Chart
82
1. No Display or display is unstable on analog ,digital or video port:
Turn on power
No picture or
picture unstable
If
Power
On
Does D-sub/DVI
cable plugs in
connector?
Does power stable ?
Replace Panel
Check D-sub/DVI
connection
Check Power core
or power board or
AC source
Does crystal work
correctly ?
Check Crystal Y1
CKT or replace it
Is Interface Board
work normally ?
Replace Interface
Board
YES
NO
YES
YES
YES
YES
NO
NO
NO
NO
2. BUTTON function:
OSD is not working
Yes
Is control BD connecting? No Plug control BD then retry
Yes
Is botton key normally? Yes Replace control BD then retry
No
Replace Control BD
Is OSD working??
No
Check Interface BD
3. OSD function:
OSD doesn’t work
Is control BD working? No Replace control BD
Check interface BD
19B4LP LCD