No Video - Kortek KT-2914F Service Manual

5-2-14 No Video

Check signal cable
and connector
IC802 Pin5,Pin8,Pin10 video
input are right?
IC802 Pin21,Pin24,Pin26
video output are right?
Q802R,G,B
video output are right?
R,G,B cathode wave
forms are right?
G2 voltage are right?
(550 ¡¾ 50V)
G1 voltage are right?
(-45 ¡¾ 10V)
Check and replace CPT
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES
R,G,B Cathode wave form
Check R,G,B Cable
conector
Check and replace
IC802
Check Q803 and
12V,80V Line
Check R806R,G,B and
Q801R,G,B
Check screen,CPT
socket, and FBT