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C The radio works unreliably
1 The radio crackles and/or is intermittent
Block diagram
B2 Mixer
B3 IF amplifier B4 detector
LW MW SW
B1 FM unit
B2 IF amplifier B3 IF amplifier B4 IF amplifier B5 detector
FM
Special thanks are due to Jef Collin for this translation
a. Follow the directions mentioned in A-1
b. Check if the antenna-ground connectors
making good contact
c. Check if the symptom can be resolved by
replacing tubes in sequence
LW MW SW
FM
FM
B9 Power
Supply
B6-B7 Audio
Amplifier
B6-B8 Audio
FM
Amplifier
B10 Tuning
indicator
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