How Do you Stop a POP

[bob barcus]

I have a 830 Vox booster that sounds pretty good with my 100w.Marsh but then I turn it ON/Off it will make a POP.Can I ground the input or output jack Is there a Cap that might be backwards.I heard the Fenderbended has that problem

[Mark Hammer]

There is a wealth of information on the many sources of switch-popping here, and their various cures.  Poke around with the search function.  I'm sure you'll be rewarded.

[bob barcus]

why doesnt search engine work,What I doing wrong

[jefe]

Try searching for the word "popping".

[azrael]

Add pulldown resistors to the input and output. Like a 1 megaohm resistor going to ground.

[bob barcus]

Thanks I found the search,but I still do not understand.Dio I solder a 1M from the tips of the in-and output jacks to the box

[Jhouse]

HERE is a good example of how someone got rid of that "pop" by adding a 1m resistor to the circuit. See how it goes from the in on the circuit board to ground? I can post the schematic too if you would like.

Anyway, what you basically have to do is locate where the in effect line goes to your stomp switch, solder a 1m resistor to that lug and solder the other end of the resistor to the ground.

[tiges_ tendres]

Thanks I found the search,but I still do not understand.Dio I solder a 1M from the tips of the in-and output jacks to the box

No because that will load the signal down whether the effect is on or off.  

You should solder the resistor from the first leg of the input capacitor, to the circuit board ground.

[Perrow]

[runmikeyrun]

I used to build pedals for my old guitarist, he had a 100w JCM 800.  We had problems with pops on most of his pedals.  Sometimes pulldown resistors helped, sometimes not.  One time the switch was microphonic, so the amp was amplifying the "click" of the switch.  That one was a real bugger to track down.  The higher gain amp you have the more likely you are to get a pop when you switch anything mechanically.