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Symptom
No power supply
No picture and
no sound
Picture OK but
no sound
No reception of
VHF or UHF
TROUBLESHOOTING
Cause
Defective power switch (SW100).
Defective DC-DC converter (T100).
Defective tuner (TU200).
Defective Q200.
Defective IC200.
Defective IC300.
Defective IC500.
Defective IC700.
Defective F201 (ceramic discriminator).
Defective IC200.
Defective IC700.
Defective phone jack (JK600).
Defective tuner (TU200).
Defective IC500.
Defective power switch (SW100).
— 10 —
Solution
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
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