Hi everyone, I bought from eBay a pair of iTeufel box monitor speakers, sold as not working (but I was planning to use them to make a DIY soundbar). That said, I plugged the main speaker and it was actually working, but with a 100hz loud hum. I thought after reading some forums that replacing the 2 main capacitor would have solved the problem (even if the old capacitors that were on wasn't looking bad at all) so I bought 2 new capacitor and put them on.
After the replacement, sure that the hum would have disappeared, I plugged the speakers, but the hum still there 🙁
I tried to check everything, I am pretty sure that is an amp problem and not a ground loop, but I am here as a learner to learn what the problem could be!
I'll attach some photos of the amplifier, but if you need more, feel free to ask for them 😊
Thanks, Marco
After the replacement, sure that the hum would have disappeared, I plugged the speakers, but the hum still there 🙁
I tried to check everything, I am pretty sure that is an amp problem and not a ground loop, but I am here as a learner to learn what the problem could be!
I'll attach some photos of the amplifier, but if you need more, feel free to ask for them 😊
Thanks, Marco
Attachments
PS: Don't insult me for my soldering skills, I have a little trembling hand, I did the best that I could!
Either way the only suspect that I had when soldering back the new caps was that "wire Bridge" from the negative probe of the capacitor to what I think is the negative probe of the rectifier bridge (tell me if it's correct)
Either way the only suspect that I had when soldering back the new caps was that "wire Bridge" from the negative probe of the capacitor to what I think is the negative probe of the rectifier bridge (tell me if it's correct)