Clave is triggering everystep.. low volume

Discuss Yocto construction and related issues
  • just a update...

    this sound i hear in the CLAVE/RIM section is in "both" instruments. i can program the sound.. that works
    but its like the sequencer triggers every step without a sound, hard to explain...

    but now .. well.. today i tried to find a cold solder point as long as the seqeuncer was running.
    i lift up the mainboard and somehow i had a short on my io board :(
    damn.. now i get +5V +15v and -4,8V
    so no sound at all... i hope its only the 7915 voltage regulator. just orderd a few :)

    so if i have insted of -15v only the -4,8v .. there cant be sound?

    best
    sascha
  • if there's no better idea, i suggest you turn the yocto OFF for some time, so all the capacitors discharge
    then measure the resistance from ground to the +15V rail, and from ground to the -15V rail
    maybe also repeat this measurement when you desolder the negative regulator

    if you get a significantly low resistance on the negative rail, this probably means that replacing the negative regulator will not fix the issue

    while you're at it, look close at all the solder joints
    also check for any metalic debris (amputated component legs) between the actual components, or anything else suspicious
  • Thanks for the reply!

    well.. it worked fine till i fired one of the regulators. of course there could be moore damage in the psu.
    i tried to meassure

    with the 7915

    +15V --- Ground -> 40k
    -15V --- Ground -> 5k

    without the 7915

    +15V ----- Ground -> 40k
    -15V ---- Ground -> 4,5M Ohm

    I am no expert but willing to learn :) hope thats not complete useless :)
  • hm.. well.. 5k is not crazy low, altho it shows quite a difference compared to the positive rail..
    solder it and cross your fingers
  • Thanks for the advice..
    It was the 7915 :) Now the Yocto is running again. Only the problem with the "low volume" triggering in the RIM Section.
    i mean you can hear every step but not loud. and he plays no sound, only a click on every step.
    any ideas?

    BEST!