Zenith P50W26, Руководство по обслуживанию

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PV154 - 923-03499
18
P50W26 - SERVICING
SERVICING
NO VIDEO 1
NO SOUND
No video
Check Input of AC
(90~225V)
Normal
Abnormal
Abnormal
Abnormal
Check ST-BY LED ON
Main S/W ON
Normal
Check LED YELLOW
Sub S/W ON
Connect plug with the set
Check AC Line Fuse
Check voltage of Vs after
disconnecting with CN802,
CN803, CN804. Check short
of Q603, Q703.
Abnormal
Replace Q603, Q703
Normal
Check conditions of and
various connectors
If found in good condition
go to Video 2.
Check a connective
condition of sound power
cable
Check voltage of sound
terminal
Check connection with
F8811 Fuse
Check connection
line of speaker