All Mountainking Electronics devices carry a Limited Lifetime Warranty (for as long as we remain in business).  This covers any problem related to the function or operation of the internal circuitry.  This warranty does not apply to the enclosure, graphics, knobs or mechanical hardware (switches, potentiometers, jacks).  Warranty is void if the device has been modified or serviced by anyone other than Mountainking Electronics.


Before contacting us about a repair issue, please take a moment and follow our troubleshooting guide.  The key to troubleshooting is to not make any assumptions and to independently confirm every possible variable (that means your instrument, amplifier, all cords and power supplies).  


  • Before addressing the pedal, confirm that all cables are working properly by plugging directly from your instrument to your amplifier.

  • Remove the pedal you’re testing from any sort of pedal board or daisy chain.  Set up your pedal with confirmed working cables (see step one).  Does the pedal pass a signal when bypassed?  If not, move on to the next step.

  • Confirm correct hook up. On all Mountainking pedals, the input jack is on the right and the output jack is on the left (when looking down at the face/graphics of the pedal).  Make sure that you are using mono cables and that they are in good working order.  A stereo TRS cable will break the ground connection on the power supply and the pedal will not power on.

  • Confirm that the pedal has power.  It’s best to start with a brand new battery that has not been used in another pedal.  If using an external power supply, make sure that it is functional and rated at +9VDC (center negative). 

  • If you find that your pedal is unusually noisy, it is most likely due to a problem with an external power supply.  The problems caused by a low-quality and/or non-isolated power supply can include, but are not limited to: switch pop, hissing, white noise and hum.  Again, it’s best to troubleshoot with a fresh 9v battery.  This can cut out a slew of potential problems caused by bad power supplies and “dirty” wall power.  We are big fans of BOSS power supplies.


If your pedal still does not function properly after following these simple trouble shooting steps, please email us at we’ll get your pedal working in no time.