By A pair of Glasses
Wed Dec 07, 2022 11:31 am
Hi There,
So recently my 60mk1 started to crackle its audio input, while playing audio at its input it sounded terrible distorted. did some test but the distortion was everywhere unfortunately.
needed to open it up and check if there was a problem. nothing to see on the eye, but the first measurement done was giving me a +15v and a -4v over the different opamps in the circuit.
tracing back this powerlines leaded me to 2x an small coil at the entrance of the audio pcb, infront of these coils the measurement was +15v & -15v but after the negative supply lost a lot in this coil. pulled this coil out and the resistance was way to high for an coil. just in case put 2x a new coil in (220H) and solved the problem.
Sampling is back to perfect
Sharing if it can be in use for someone in the future.
Greets
Danny
So recently my 60mk1 started to crackle its audio input, while playing audio at its input it sounded terrible distorted. did some test but the distortion was everywhere unfortunately.
needed to open it up and check if there was a problem. nothing to see on the eye, but the first measurement done was giving me a +15v and a -4v over the different opamps in the circuit.
tracing back this powerlines leaded me to 2x an small coil at the entrance of the audio pcb, infront of these coils the measurement was +15v & -15v but after the negative supply lost a lot in this coil. pulled this coil out and the resistance was way to high for an coil. just in case put 2x a new coil in (220H) and solved the problem.
Sampling is back to perfect
Sharing if it can be in use for someone in the future.
Greets
Danny