No Sound In Internal Speakers - Bang & Olufsen BeoCenter 6 – 26 Service Manual

2.4 Fault flow chart
Fault symptom

- No sound in internal speakers

Possible cause:
- Speaker setup
- Defect PCB0, Sound output
- Defect cable W06 or W08
- Defect module 999, Main chassis
- PCB4, Main power supply defect
Press SPEAKER  on
Beo4
Sound OK?
- - - - - - - -
Activate internal
speakers
Find channel in
Are both left/right
"speakertable" and
without sound? measure speaker(s)
Replace Sound output
Reconnect P32 on
Camcorder mute
active?
Check voltage on
Disconnect P32 on
pin & 3 +2V
PCB0
Sound OK?
pin2&4 -2V
Replace Camcorder Replace Sound output
(PCB59)
Measure direct on the
speaker terminals
Speaker OK?
OK?
Replace speakerbox
internal connection
Replace Main chassis
(PCB0) (module 999)
PCB0
Replace Main chassis
PCB4 P2
(module 999)
Pcb4 P2
(PCB0)
No
Yes
Replace defect speaker