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TROUBLESHOOTING
Picture OK but
no sound
Symptom Cause Solution
No power supply Defective power switch (SW100). Replace.
Defective DC-DC converter (T100). Replace.
Defective tuner (TU200). Replace.
Defective Q200. Replace.
Defective IC200. Replace.
Defective IC300. Replace.
Defective IC270. Replace.
Defective IC700. Replace.
Defective F201. Replace.
Defective IC200. Replace.
Defective IC600. Replace.
Defective phone jack (JK600). Replace.
Defective tuner (TU200). Replace.
Defective IC270. Replace.
Defective power switch (SW100). Replace.
No reception of
VHF or UHF
No picture and
no sound
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