madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: PostPaintBoy on December 29, 2010, 04:37:47 AM

Title: Slam Box LED On Even Without Battery
Post by: PostPaintBoy on December 29, 2010, 04:37:47 AM
Ok so I've just finished my Slam Box and it works perfectly. My only concern comes from the fact that the LED turns on when I stomp the footswitch without the battery in. Is this something to be concerned about? Thanks.
Title: Re: Slam Box LED On Even Without Battery
Post by: the3secondrule on December 29, 2010, 09:06:22 AM
well, if this happens while your pedal is plugged into a power supply (ie DC adaptor) thats fine.

if your LED lights up when you have no battery and no power plugged in, thats amazing. You have just discovered free electricity.

;D
Title: Re: Slam Box LED On Even Without Battery
Post by: gtr2 on December 29, 2010, 11:54:47 AM
It may stay lit for a couple seconds until the cap discharges, but after that your on your own  ;D
Title: Re: Slam Box LED On Even Without Battery
Post by: PostPaintBoy on December 29, 2010, 03:09:29 PM
So its nothing that's going to hurt my pedal though, right?
Title: Re: Slam Box LED On Even Without Battery
Post by: CRBMoA on December 29, 2010, 06:47:46 PM
Hard to say without pics. At least for me, I know when the lights act irrationally, it means something is goofy in my offboard wiring.

There is no magic. If the pedal is not doing what it should (which includes the lights), then something is wired wrong and is sending electrons the wrong direction.

A picture is worth a thousand words.
Title: Re: Slam Box LED On Even Without Battery
Post by: jkokura on December 29, 2010, 07:03:26 PM
And a Video of the problem would be worth even more.

Jacob
Title: Re: Slam Box LED On Even Without Battery
Post by: jackbart1960 on December 30, 2010, 11:28:47 PM
Quote from: PostPaintBoy on December 29, 2010, 03:09:29 PM
So its nothing that's going to hurt my pedal though, right?
No but really dude if it lights up without power you have indeed discovered free juice!!! :D
Just think of it cold fusion on a Mad Bean board.
No but really just busting balls it's either the caps as per GTR2 or most of the builds here will power the LED with conected power and no input cable. The b chanel short to ground on the input jack is just for the battery.
Peace. J.J.B.