Troubleshooting - Casio EV-2500B Service Manual & Parts List

TV
Symptom
No power supply
No picture and
no sound
Picture OK but
no sound
No reception of
VHF or UHF
RADIO
When the radio is defect, replace the radio PCB unit.

TROUBLESHOOTING

Cause
Defective power switch (SW100).
Defective DC-DC converter (T100).
Defective tuner (TU200).
Defective Q200.
Defective IC200.
Defective IC300.
Defective IC270.
Defective IC700.
Defective F201.
Defective IC200.
Defective IC600.
Defective phone jack (JK600).
Defective tuner (TU200).
Defective IC270.
Defective power switch (SW100).
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Solution
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.