29D-FG3RU
YesYes
Yes
NoIs there audio signal at pin (2) and (5) of IC361?Check IC361, and their peripheral parts.
Set S-Volume at maximum. Do pins (5), (20) of IC3501 work?No
Check IC3501.
Yes
No
Is there audio signal at pins (2), (23) of IC3501?Check IC1900 peripheral parts.Check IC4301 and their peripheral circuit.
18-2
Is audio output terminal J901 normal.
NO NORMAL SOUNDNoYes
Check TU51 and its peripheral circuits of no problem, set the sound system inpositon.
Yes
No
Check TV sound.
Check IC1900 and its peripheral circuit.
Change the sound system. Is sound normal?Is there audio signal at pins (46), (48) of IC1900?No
TROUBLE SHOOTING TABLE (Continued)
Check TU51 peripheral parts.
No
Check IC850 and their peripheral circuit.
Yes
Are pin (7), (8) and (9) of IC850 nomal?
Abnormal
Check the peripheral circuits of screen heater (FBT) and the CRT.
Check TU51(TUNER), SF201 and its related parts.Yes
No
18-1
Check IC1900 and its peripheral circuit.
BCheck Q405 and their peripheral circuit.
Check IC201 RGB out Normal?Check IC201 and their peripheral circuit.
No snow noise.
Check pin (6) and (7) IC201.
YesNo (Noise)Yes(Signal)
NoYes(Signal)No(Noise)
Normal
TROUBLE SHOOTING TABLE (Continued)
Noise or signal appear.Is AV1, AV2, AV3 or input normal?Check pin (43) of IC1900 noise or signal appear?Check pin (39) of IC201 noise or signal appear?Check IC1900, IC1901 Q1901, and their peripheral circuit.
18 |