Bang & Olufsen BeoVision 1 Update III Instructions De Service page 11

Sound
Check aerial connection
No sound in
internal
loudspeakers
No bass
or
no treble
Find channel in
Are both left/right speakertable and
without sound?
Measurement OK?
Replace PCB10 /
Sound/DVD
chassis (BC1)
Reconnect 10P32.
Disconnect 10P30.
Measure approx.
+ 21V between
4P21p1 and
Disconnect 10P32
4P21p3 and
OK?
approx. -21V
4P21p2 and
Replace PCB10 /
Sound/DVD
Replace PCB59
chassis (BC1)
Are both left/right
without bass or
without treble?
Replace PCB10 /
Sound/DVD
Replace speakerbox
chassis (BC1)
OK?
Fault fl ow chart, English
No
Yes
Replace speakerbox
measure.
Replace main
chassis
OK?
Replace main
chassis
OK?
between
4P21p4
OK?
Replace main
chassis
OK?
OK?
Find speakerunit in
speakertable and
measure.
Speakerunit OK?
Replace PCB10 /
Sound/DVD
chassis (BC1)
OK?
2.9
The TV should be
taken to a
workshop for repair
Replace speakerbox
Replace
speakerunit or
speakerbox
Replace speakerbox