Hey,

I'm not getting any sound from the left channel of my OG SP-404, from both the RCA outputs and the headphone out, unless I press down hard on the volume knob. Asked a technician about this a while back and he thought the cause of the problem was most likely the volume knob, as he had repaired a SP-202 with the same problem. Also, the 4th knob is skipping values. Cleaned the contacts with isopropanol which made it better for a while but now it's fucked again.

I've attached some pics of the circuit board - solder joints look pretty nasty. Anyone had this problem with their 404? Would re-soldering the old pots work, or should I try and find replacements?





Thanks,
Charlie

Hey Charlie
Had the same problem with my 404 OG no sound at all from the left channel either through the headphones or the phono outputs. To top it the volume knob also doesn't change any values so it is constantly stuck at the same volume. I too looked inside, my shoulder joints don't look as fucked up as that tho, but I gave them a clean to no avail. If anyone could shed any light on this problem or has had similar issues some advice would be great.

i once resoldered that shit and it turned out alright. good luck!

I got two 404s with this problem

Help!