Power from adapter does not power pedal

[GibsonGM]

Pics too small    Or my eyes are too old....

Oh, no no, don't apologize....ADONIS is a PERFECTLY good forum name!!!!    And be sure to call him SIR when you reply, he really enjoys that!!! 

[Badcircuit]

DISREGARD MY PREVIOUS JACK PHOTO.  God, I feel like an idiot.  I'll redo the jack photo and enlarge them both.

[Badcircuit]

Okay, this is the CORRECTED VERSION of the way I have the jack. 


Here is my board.




I have checked the adapter on the multimeter.  It is center positive, sleeve negative.

One more thing, the power comes on from the adapter when the guitar is not plugged in.  i may have mentioned this already.

I can't make them any bigger but if you click on them, they enlarge. Sorry, I have limited forum experience.

Sorry to keep on adding to this.

I moved the tip and ground to the switched lugs on the stereo jack.   The adapter power now comes on and remains on when the jack is inserted; however, there is no battery power.

Okay, I just went back and read the posts.

One post says the adapter must be center negative.  So apparently, I have the wrong adapter.

What a fiasco.

But finding out that I was using a center positive adapter does not explain the lack of battery power.

[GibsonGM]

Get a new adapter, and straighten out which tab is what on the jacks, even if you have to go research them online (I don't know those pinouts offhand, sorry!)  If I can't tell, I test them with...you guessed it....multi-meter.   You can often look up inside them when inserting a plug and see which tab is connecting what part of the plug. 

You want a STEREO jack for the input jack.  MONO jack for the output.  Follow the wiring diagrams for how to connect the stereo deal. I was lucky to have had 1/4" plugs around when starting this hobby....I could plug one into a stereo jack and use a meter to find TRS easily!  You will figure it out.

Next we have to determine if you'd burned up any parts by using a PS of the wrong polarity...

[Badcircuit]

I think I did.  It's not working with the battery.  But did come on with the adapter.

I'm driving you all crazy.

I've already looked up how to put a diode on my circuits for polarity protection.

[GibsonGM]

Wish you'd looked that up beforehand, LOL!      We've gone so long in this I forget if this was a kit you built or something you made yourself?  If a kit, it may have its own protection diode.   If not, we'll need the whole diagram (schematic) to steer you right. Probably a new post would be a better idea for that, "help reversed power supply" or something. 

If it comes on w/battery and not adapter, and adapter is center positive...then the battery snap is wired backwards. Does it pass sound when it's "on"?

[Badcircuit]

is does not come on at all with the battery.  I'm pretty sure its fried. 

[bamslam69]

Aha!!!!
Piss off that power supply and get a centre negative supply. Pretty much all pedals are wired for centre negative.

In the meantime, connect a battery snap to a dc plug end, and use that to test the dc jack.

[Badcircuit]

The circuit still works with the battery.

I have looked up how to put polarity protection on it.

I want to personally than you all for sticking with me on this.  You all have been the best.  This really helps me as I have more boards I have had built.

Just one question, am I safe to buy a guitar pedal adapter off of Ebay?  I notice  that they say "guitar pedal" but do not specify that it is center negative.  I know, I'm being over cautious.

Also, to Atonis, Sir, you are the Adonis of pedals.  I have no doubt.

[bamslam69]

Can you please talk us through the two commoned 9v+1 & 9v+2 inputs on your board? Where do they go offboard?

Also post a schematic of your board.

[GibsonGM]

I thought I was doing pretty well, although I'm not Adonis

You might be OK buying a BOSS adapter from Ebay, be sure to check the seller's ratings! And comments.  I would try to find a larger kind of outfit, not a person selling 1 thing.   Look specifically for info about "Boss style" or center negative.

Amazon has them too.   But a place like Sweetwater is the real deal, or a local shop if you have one.  Others will have other sources if you post, say in "Lounge".

If it works (you hear effect, effect switch on/off) with battery, then it is not fried.  But you do need to add protection.

[bluebunny]

So far as purchasing a power supply for pedals, I would avoid anything nameless, whether on eBay or not.  Just get something from a reputable music kit vendor that's recommended by guitarists (or us).  I would vote for the 1Spot, but there are plenty of others, all very capable and reliable.  Trying to scrimp on a power supply just isn't worth it.

[bamslam69]

+1
Cheap power supplies = lots of humming and buzzing from your pedals.

[antonis]

Cheap power supplies = lots of humming and buzzing from your pedals.

That's for sure but to have hum and buzz you must have power..

[GibsonGM]

The one I use for most of my pedals is a "Godlyke" power supply, it's been great for 10 years, and seems readily available.

[duck_arse]

Also, to Atonis, Sir, .....

this one? nobody want it?

[antonis]

Also, to Atonis, Sir, .....

this one? nobody want it?

I'm not aware of anyone..

[GibsonGM]

Adonis answers when Adonis is ready. We do not know the will of the gods...