Service manual

19
3. A Missing Color
Is input signal
normal?
One color is
missing
CRT
Cathode (Rk, Gk, Bk)
is normal?
Is video
output IC(IC802,
TDA9536)
normal?
Each grid (G1, G2)
voltage normal?
Is the
output of pre-amp
(IC801, TDA9210)
pin 16,18, 20 all
normal?
Check video signal
cable or video card.
Trouble in IC801 or its
ambient circuit
Trouble in
video output
circuit or
ambient
Replace Video output IC
Trouble in 100Vdc line
Replace CRT
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
RK, GK, BK
About 40V p-p
0.7Vpp