Emax

hello everyone, I'm new to this group and I wanted to ask you a hand to fix my emax

the problem is that samples of my emax evil , or that later when I 'm going to feel the sound that I have just sampled , you will hear distortion (you can hear a clip where digital transients are strong, and a rustling sound when the transients that I am sampling are weak )

I have already tried with different cables , with the microphone , trying with different gain setting dall'emax .

I also have a library at home emax original I tried to load it and feel perfectly

I run the digagnostica to understand where is the problem : the bank ram test passed , and the well -ram test , the test port rs422 I did not even test the floppy because I believe that it takes a floppy specially written , I have not even run the last test or calibration filter that i could not do because i did not understand the proceedings

test the ignition it seems that all the LEDs anccendano although some stay on for very little time

last thing to add , I wanted to ask if it was the power supply problem ... emits a strange buzzing

I definitely overlooked some detail , ask if I was not clear and thanks in advance

Dario