High Voltage Output Circuit - Daewoo 715B Service Manual

10. High Voltage Output Circuit

Trouble in H.V circuit
(No Raster)
Is
175V line
voltage normal?
Yes
Is Q601
Gate waveform
normal?
No
Is Q604, Q603
Base waveform
normal?
No
Is IC601
pin 10
normal?
Yes
Is the
IC601 pin5 H.trigger
correct?
No
Trouble in H.trigger
27
No
Trouble in power
supply circuit
Yes
Trouble in Q601 or FBT
Yes
Trouble in Q603, Q604
12V Line
No
Trouble in IC601
Yes
Trouble in IC601
ambient circuit.