akai am-95 überlastet

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sylt110
Schaut ab und zu mal vorbei

#1 erstellt: 13. Sep 2009, 10:39

hallo
also zum ersten problem die anziegen von meinem akai verstärker blinken was kann das sein?
2. wenn ich eine der drei sicherungen raushole hört er auf zu blinken und die ls brennen durch

was kann das seine
ich bedanke mich im voraus für die antworten

sylt110

tri-comp
Stammgast

#2 erstellt: 13. Sep 2009, 22:23

Hi,

The AM-95 has a protection-circuit that cuts-out the speakers when the output-amplifier is defective (Shorted transistors etc.). This circuit also drives a pulse-generator that makes the Power-LEDs flash in case of fault.
So, You need to take this very nice amplifier to someone professional who knows how to repair it. Stop pulling fuses or replacing them. You will just make things worse.

I can help with a manual/schematics BUT... you should be very sure you are up to start repairs. This amp is very special and powerfull (2x180W DIN/4 Ohm) and deserves to be treated with respect.

If you are REALLY in luck the fault will be in the protection-circuit itself. It's build around IC1/HA12002. ALL electrolytic capacitors in the circuit could be a problem. Even if the fault is found to be elsewhere I would still replace these capacitors. They are: C4B (Unknown value), C5(4.7uF/25V), C6(10uF/16V), C7(330uF/16V)

mfg,

/tri-comp

sylt110
Schaut ab und zu mal vorbei

#3 erstellt: 14. Sep 2009, 14:13

hallo thank you, however, problem I still have.
with us there is nobody shop or elektroniker.
I must only look because this should run to hallowen again.
nevertheless, thank you

mfg
sylt110

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