Okt
11
2013

Aktif Speaker KRK ROKIT5 Audio Trouble

diagnosis

KRK active speaker looks ROKIT5 if we turn the indicator light but no sound came out when we enter the audio input .

KRK speakers ROKIT5 models :

KRK-ROKIT5

What causes it ? we immediately investigate .

When we turn and we turn we hear sound in speaker , so chances amplifier system is not problematic . So we are no damage estimates tone control section and it is true . Tone control using IC JRC4580 there are some pieces there and once we do we get 1 IC measurements with different voltage at pin number 1 ( voltage -15 volts ) Position IC on the mainboard :

main-unit-tone-control-KRK-

Replacement IC JRC 4580 we do using JRC type 4558 and the results remain the same ( no change ) , there remains the pin 1 voltage -15 volts . We turn off the speakers KRK ROKIT5 and we measure one by one component and the result then we know that 1 Diode 4148 are the cause. We use type diode IN4001 replacement and after replacement process KRK speakers ROKIT5 now is back to normal .

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