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FDP Forum / Miscellaneous and Non-Fender Topics / Boss pedals



'scuse me while I kiss the sky.
Oct 12th, 2016 04:06 PM   Edit   Profile  

The normal state of activation for my Boss DD-3 is On when you apply power, all my other pedals are off.
It's not a major issue however unless the first song requires delay I must turn it off every time.
I'm wondering if this is easy to reverse. I guess if there's a simple dip switch to adjust somewhere then I'd appreciate knowing.

FDP Data Goon

When I sin

I sin real good
Oct 12th, 2016 06:29 PM   Edit   Profile  

It's how they are.

It's not a "simple internal dip switch" - will require modding a SMD pedal.



Oct 13th, 2016 10:44 AM   Edit   Profile  

Funny this should come up.

I have a GE-7 EQ that I got off of CL last weekend ($12, beat to crap, but works).

I have at least seven other Boss pedals. This GEQ is the ONLY one that has ever done this.

It most likely has to do with the electronic switching circuitry and how it gets set on power up. My guess is that changing a cap or resistor or two would fix it, but I don't have the time or desire to dig into it right now.

It's a minor annoyance, but if that is the worst thing that ever happens to me I'll be pretty lucky.

Contributing Member

Houston, TX

Give me a second to think of something..
Oct 13th, 2016 11:50 AM   Edit   Profile  

Mine does the same thing, as does my TU-3 tuner and the RV (whatever) reverb. I've never had a problem with it, I just wait a few seconds and switch them off.

FDP Data Goon

When I sin

I sin real good
Oct 13th, 2016 07:12 PM   Edit   Profile  

Yea, every Boss pedal I've ever owned has done this. I step off the two on my board if it gets power-cycled, and call it good.


Northern CT - USA

"We're not University material."
Oct 19th, 2016 11:07 AM   Edit   Profile  

I've got a few Boss pedals on my board. When I plug in my pedal board during set up at every gig, a couple of the Boss pedals always power on (SD-1 and a delay pedal). One other non-Boss pedal also turns on.

Like reverendrob, I just stomp them off and I'm good to go. The only "risk" is when playing outdoor gigs in the sunshine, you can't always see those little lights so well. So u might miss clicking one off.

But heck, when you start tuning and warming up, checking your amp signal, etc. it would be hard not to tell that one of your pedals was on...especially a dirt pedal. It would be bad for me to have dirt in my signal when we start our first Beatles song "Day Tripper". Thankfully, that's never happened :)


Nicoma Park, OK.

"Let the music do the talking"
Oct 22nd, 2016 03:08 PM   Edit   Profile  

Some Line-6 pedals will do that as well.

Contributing Member


Oct 23rd, 2016 07:32 AM   Edit   Profile  

I have a few Digitech pedals that do this as well.

Contributing Member

Irishman in Paris

It's just a guitar, not rocket science.
Oct 23rd, 2016 10:37 AM   Edit   Profile  

My TC Electronic pedals remember the state they were in when last powered off. Handy in that a brief power failure or idiot unplugging the wrong thing on stage doesn't require tap dancing to switch what I need back on.

Contributing Member


Oct 23rd, 2016 02:44 PM   Edit   Profile  

"Yea, every Boss pedal I've ever owned has done this."

I haven't given this thought in years, but yes, this is what they do. I remember long ago when I was working retail, when I'd power on our giant Boss pedal demo display in the mornings, some would come on and some wouldn't... and it was always the same ones. I'd click them all off and go about my day.

No idea why, but most likely related to the fact that these use mosfet switches rather than mechanical switches - it could just be a tolerance thing on some component somewhere.

Contributing Member


Christian Slater
Oct 23rd, 2016 06:07 PM   Edit   Profile  

Some circuits are managed by a microcontroller, and some are not.

The MC-managed circuits power up as intended from the factory. Other than modding them (Got Solder?), best thing to do is power up your board and click all your pedals to your default start settings before you make your connection (cable? wireless?) to the amp.

I prefer all pedals to be 'on' when pedal power hits them. That way I know they're getting power with those little LEDs beaming at me.


Va.Beach, Va. U.S.A.

Oct 25th, 2016 11:42 PM   Edit   Profile  

I have several Boss pedals on my stage board, Boss tuner, compressor and a Blues driver w/Monte Allums mods,a Boss delay and a reverb .On initial power up they all come on except for the Compressor. Just got used to it over the years.
Living and playing in a resort beach area I play a lot of outdoor gigs.i I've replaced all the LED's in these pedals with larger diameter and brighter bulbs. The bright white bulbs have just a bit of a bluish tint and are very visible in the sun light. If you find them too bright on inside jobs you can always put a little office whiteout on the tip of the bulb to dim them a bit. You can rub it off with your finger when you don't need it anymore.



Jul 7th, 2019 04:39 PM   Edit   Profile  

Updating this discussion from a couple of years ago.

Yes there is a way of doing this, or at least it has worked for me.

Why would someone want to do it?
Case 1: I have at least 7 Boss pedals on a pedal board.
For whatever reason, only one of them comes ON when the board is powered up (a GE-7).
They are all switched in/out of the signal path using true bypass strips (Road Rage, Loop-master, etc.).
For that reason, they need to be always on.
Yes, I could just set them all to on whenever I powered up the board (there are bigger problems in life, I know).
But it would be nice to have them all come up as on, even though they may not actually be in the signal path due to the TBP strips.

Case 2: Maybe you have a remote switcher, and all of your pedals are in a rack in drawers.
Instead of pulling drawers in/out to make sure that the pedals are on, it would be nice if they powered up that way.

So, I got tired of the usual procedure and started looking into this.
Now my board has all of the pedals powering up to on and looks like a Christmas tree.
I only found two other vague posts on the internet about this.
I got to thinking about it, got creative, and here we are.
There are probably several other ways of doing this.
Here's my method.

Boss pedals (most of them, especially the older designs) have an RS flip-flop that controls the switching.
What state it ends up at when you power up can be not what you want.
It consists of two transistors and some RC components.
If you change the collector resistor on one of the transistors, it will determine the power up state.
In all of the schematics that I have seen, these resistors are 56K.
However, the part designators are probably different for every Boss pedal.
You will either need to have a schematic, or will need to trace out a part of the circuit and use some experience and guesswork to determine which part to change.
The good news is that in the schematics I've seen, there aren't many parts that are 56K resistors other than the ones used in the switching area. However, there are other ones, so make sure you get the right ones.

I'll use the BF-2 flanger as an example, since it's one of the more legible schematics on the internet.
These resistors are R55 and R56.
To make the pedal so that it comes up to ON, you need to lower R56.
How low?
I tried 330K in parallel with 56K (which is about 48K). Nope.
I then tried 220K (about 44K). Bingo.
On the other pedals I experimented and went as low as 100K in parallel with the 56K (about 36K), and they all work fine.

How to do it?
Two ways.
Method #1: You can just swap out the resistor once you determine which one it is.
But........I have an NS-2 that has the teeny tiny surface mount parts. Good luck with that.
Or maybe you have a vintage pedal and don't want to butcher it too much.
Method #2: Just add a resistor in parallel with the 56K on the board.
This might actually be easier.
The only issue here is that it may be kind of tight between the pads.
I got around this by following the traces around the board so that I could solder to places that are a little farther apart.
I soldered on the trace side of the boards, put some sleeving over any exposed leads, and the bottom covers go back on with no problems.

But what if your pedal powers up to on, and you want to make it off?
I'm not sure, but my guess is that if you lower one of those two 56K collector resistors you'll nail it.
Which one? Take a guess, If it doesn't work, try the other one.

A lot of Ibanez and other pedals use a similar circuit.
I'm guessing that you could to the smae things with them as well.
However, some of the values might change so you're on your own.

If your pedal is controlled by a microcontroller (MC) or some other means, this project will probably not work for you.
I'm guessing that this means a lot of the more complex Boss pedals like the DD-x series, RV-x series, and more complicated digital pedals.
Getting a schematic will work wonders.

FDP Forum / Miscellaneous and Non-Fender Topics / Boss pedals

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