3. A Missing Color
One color is
missing
Is input signalCheck video signalNo
normal?cable or video card.
0.7Vpp
Yes
Is the
output of pre-amp
No
Trouble in IC801 or its
(IC801,TDA9210)
ambient circuit
pin 14, 16,18 all
normal?
Yes
Is video
CRT
NoNo
output IC802
Cathode (Rk, Gk, Bk)
Trouble in
is normal?waveform normal?RK, GK, BK
video output
About 40V p-pIC802
Yesor ambient
Yes
Each grid (G1, G2)
Trouble in 100Vdc
voltage normal?
line
Yes
No
Trouble in G1,G2 line
Replace CRT
17 |