29A-FD5
29A-FD8
No
Check IC3801, IC3802, IC3803 and their peripheral circuits.
Are pin (8) waveforms of IC3801, IC3802, IC3803 normal?Yes
AbnormalCheck the peripheral circuits of screen heater (FBT) and the CRT.
Check TUNER and its related parts.
Yes
No
Check IC402, IC451 and their peripheral circuit.
CCheck Q200, Q201, Q203 and their peripheral circuit.
No snow noise.Check IC2801 RGB out Normal?Check IC2801, their peripheral circuits.
Check pin (19) of TU201.
YesNoYes
NoYesNo
Normal
TROUBLE SHOOTING TABLE (Continued)Noise or signal appear.Is AV1, AV2 or AV3 input normal?Check (5) of IC402 NOISE or signal appear?Check pin (15) of IC2801 noise or signal appear?Check Q2402, Q2404, Q2411, IC2801 its peripheral circuit.
Circuits to be checked: YA/V circuit. YVideo output. YPeripheral circuit of Bus Line.
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ACEC
