21
Troubleshooting
The following table is a list of symptoms that occur when any of the supply voltages are shorted to ground at turn ON. This may be helpful in
troubleshooting. It is important that you take into account all the symptoms to aid in your troubleshooting,
Voltage
Relay Clicks
Video
Audio
Timer
LED
HV
Power Switch
Suspect
+135
2 power On and
Shutdown. Power
supply chirps.
No
No
4
No
Set ON and
symptom repeats
Q502, 200 volt
problem, T503 FBT
+12
2 power On and
Shutdown. Power
supply chirps.
No
No
4
No
Set ON and
symptom repeats
IC603 9 Volt
Regulator, IC501
Pin and OCP
+5
4 clicks. Power ON,
Degauss ON and OFF
and Shutdown.
No
No
4
No
Set ON and
symptom repeats
IC604 5 Volt
Regulator, Data
problem
+9
4 clicks. Power ON,
Degauss ON and OFF
and Shutdown.
No
No
4 the
fourth
flash
stays on
for
several
seconds.
No
Set ON and
symptom repeats
IC603 9 Volt
Regulator, IC1301
YCJ or IC301
Depending on model
Audio B+
3 Normal
Yes
No
Normal
Yes
Set turns OFF
PS401, 402 and
IC401, 402
depending on model
+200
2 power On and
Shutdown. Power
supply chirps.
No
No
4
No
Set ON and
symptom repeats
Q502, 200 volt
problem, T503 FBT
+12 Scan
Derived
4 Normal 3 then fourth
for shutdown.
No
Yes
4
Yes
Set ON and
symptom repeats
IC502 V Out, R550
-15
4 Normal 3 then fourth
for shutdown.
No
Yes
4
Yes
Set ON and
symptom repeats
IC502 V Out, R549
Summary of Contents for FD TRINITRON WEGA KV-13FM12
Page 27: ...22 NOTES ...
Page 48: ...APPENDIX ...
