Hello community !
I have recovered a big amplified speaker with a fuse problem. What i know it's that the owner turned up the volume to maximum and the speaker stop working. The fuse was dead, so I replaced it with the same kind of fuse (100-240V~ 1.6A 50/60Hz), when I switch on the speaker, the fuse literally exploded. So it's obvious that there is something elsewhere... I search on the internet for datasheets of the specified speaker but found nothing...
However, I opened it, and I can see that a ceramic capacitor as exploded too, and there is a burn trace in a part of pcb.
(I hope it's the right place to post that kind of problem)
REF: Novistar professional speaker - power: 450W - DOUBLEBOOST 9515334 - 100-240V~ - 160W - 50/60Hz / from France
What I am asking to you guys is :
- Why a ceramic capacitor could exploded like that ?
- Where could I find that kind of speaker datasheet (assuming that most of amplified speakers assembly looks like each others)
- What could be the value of the ceramic exploded capacitor (in order to replace it) ?
- Is there something to replace in the part where there is burn trace ?
- Is the speaker saveable ?
Much thanks !
PICTURES :
the global View :
Power supply part where the cer capacitor exploded:
blank holes = unknow capacitor place the exploded green cap
Where there are burn traces :
There is burn traces between the IC and the big resistor
I have recovered a big amplified speaker with a fuse problem. What i know it's that the owner turned up the volume to maximum and the speaker stop working. The fuse was dead, so I replaced it with the same kind of fuse (100-240V~ 1.6A 50/60Hz), when I switch on the speaker, the fuse literally exploded. So it's obvious that there is something elsewhere... I search on the internet for datasheets of the specified speaker but found nothing...
However, I opened it, and I can see that a ceramic capacitor as exploded too, and there is a burn trace in a part of pcb.
(I hope it's the right place to post that kind of problem)
REF: Novistar professional speaker - power: 450W - DOUBLEBOOST 9515334 - 100-240V~ - 160W - 50/60Hz / from France
What I am asking to you guys is :
- Why a ceramic capacitor could exploded like that ?
- Where could I find that kind of speaker datasheet (assuming that most of amplified speakers assembly looks like each others)
- What could be the value of the ceramic exploded capacitor (in order to replace it) ?
- Is there something to replace in the part where there is burn trace ?
- Is the speaker saveable ?
Much thanks !
PICTURES :
the global View :
Power supply part where the cer capacitor exploded:
blank holes = unknow capacitor place the exploded green cap
Where there are burn traces :
There is burn traces between the IC and the big resistor