hi...maybe this is not the best forum to ask help for this but, i have a pair of neumann kh120 and for sometime now when i turn them on a crackling noise comes from the monitors but then after a few minutes it goes away and they function normally...now, one of them more recently is becoming worse , the noise wont go away unless i play really loud tones on it for a while...
i no electronics expert and never repaired or built a pair of speakers...i'm hre because repairing these monitors maybe too expensive and buying new ones even more expensive...
anyone know if theres an easy fix for this? is it just a capacitor that needs replacement ?
can upleaod pictures and example of the sound if need.
cheers and looking forwrd for help
i no electronics expert and never repaired or built a pair of speakers...i'm hre because repairing these monitors maybe too expensive and buying new ones even more expensive...
anyone know if theres an easy fix for this? is it just a capacitor that needs replacement ?
can upleaod pictures and example of the sound if need.
cheers and looking forwrd for help
Hi, might be bad solder joint somewhere. Look first places that can have stress on the joints like connectors and big components. Might be hard to find and often people just reflow joints until problem solved. Could be bad cap, havent repaired stuff for ages and already forgot much of the little knowledge I once had 😀 My vote goes for bad solder joint nevertheless
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At least cranking it up fixes it as a temp fix. "Honey, it needs to be this loud to fix it." I am gonna make up a popping sound. Thanks for the idea.
Hehe yeah 🙂 The cranking up means more heat which expands material. If there is bad contact somewhere like poor solder joint it will make better contact after getting warm.
I suddenly remembered a trick from oldies to detect this kind of intermittent problems: when your device is warm and functioning take air cleaner spray and spray the PCB / contacts you suspect. This makes the temperature drop on that location and should reveal where abouts the bad solder joint is, around where you just sprayed.
But for first step I'd make sure all cables make contact properly. Tighten any screw terminals and re-seat any connectors with a little in out workout. Have fun, watch out the mains voltage!
I suddenly remembered a trick from oldies to detect this kind of intermittent problems: when your device is warm and functioning take air cleaner spray and spray the PCB / contacts you suspect. This makes the temperature drop on that location and should reveal where abouts the bad solder joint is, around where you just sprayed.
But for first step I'd make sure all cables make contact properly. Tighten any screw terminals and re-seat any connectors with a little in out workout. Have fun, watch out the mains voltage!
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