Huang Jerry
Member
Brief overview: Klein + Hummel O110, around 15 years old, making noises as seen in the video below.
Quite temperamental tweeter electricity noise, started around 3 months ago, 60% of the time it works perfectly fine, it is unusable when this happens.
The noise still happens when XLR cable is unplugged, on multiple (no-load) breaker, using multiple different power cable, and my other (perfectly working) speaker does not have this noise whatsoever. Thus not anything to do with signal path, software etc.
Trust me. I did my due diligence.
It's either the power amp and its PCB, transformer, bass/mids adjustment pots or the input/opamp board.
Some diagrams (very basic - schematic is non-existent)
There is no "smoking gun" anywhere on PCB.
Local repair shop quotes me around 500USD for repair, which is ridiculous.
I'm clearly desperate as I need this to do mixing and pay for my school fee, and I'm even more desperate as I do not have the necessary skill nor equipment to do complicated PCB repairs (I can solder a few through-hole components though).
Anyone experienced this / ANY diagnosis and help very much welcome.
Tell me if you need more info.
TLDR:
C'mon just help your bro out for once, read the thing, it's not even that long.
Quite temperamental tweeter electricity noise, started around 3 months ago, 60% of the time it works perfectly fine, it is unusable when this happens.
The noise still happens when XLR cable is unplugged, on multiple (no-load) breaker, using multiple different power cable, and my other (perfectly working) speaker does not have this noise whatsoever. Thus not anything to do with signal path, software etc.
Trust me. I did my due diligence.
It's either the power amp and its PCB, transformer, bass/mids adjustment pots or the input/opamp board.
Some diagrams (very basic - schematic is non-existent)
There is no "smoking gun" anywhere on PCB.
Local repair shop quotes me around 500USD for repair, which is ridiculous.
I'm clearly desperate as I need this to do mixing and pay for my school fee, and I'm even more desperate as I do not have the necessary skill nor equipment to do complicated PCB repairs (I can solder a few through-hole components though).
Anyone experienced this / ANY diagnosis and help very much welcome.
Tell me if you need more info.
TLDR:
C'mon just help your bro out for once, read the thing, it's not even that long.