Garyl
Full Member level 5
I've been soldering two copies of the same circuit with brand new LM386M and I realized that first one has literally zero noise (unless I touch the potentiometer pins), and second one has a constant, loud noise (but still reacts to touching pins).
I've been testing both circuits with the same speaker.
I have investigated it, swapped the LM386Ms and found out that most likely one of the LM386M is the culprit.
I have replaced the noisy LM386M with an another one and now everything is ok...
Did anyone here experience similiar problems?
Does it means that LM386M has a different audio quality from batch to batch or did I get unlucky and bought a broken chip?
I've been testing both circuits with the same speaker.
I have investigated it, swapped the LM386Ms and found out that most likely one of the LM386M is the culprit.
I have replaced the noisy LM386M with an another one and now everything is ok...
Did anyone here experience similiar problems?
Does it means that LM386M has a different audio quality from batch to batch or did I get unlucky and bought a broken chip?