Question about Boss ME25 Guitar MultiEffects Pedal with AC Power Supply Samson HP10 Headphones and (2) Sonic Sense Instrument Cables

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Polarity of power supply for boss rc3 - Boss ME25 Guitar MultiEffects Pedal with AC Power Supply Samson HP10 Headphones and (2) Sonic Sense Instrument Cables

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SOURCE: AC power supply polarity for

Center negative. 9.6 VDC 500ma Boss PSA-120S is official adapter.

Posted on Mar 07, 2011

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1 Answer

Pedal plays10 minutes then cuts off


Sounds like bad power. Just checking to make sure the voltage on the power supply matches is not enough. You need to make sure that the miliamps match AND that the polarity is correct. I had the same issue with my old DD-20.

Sep 03, 2014 | Roland Boss DD7 Stereo Delay pedal (with )

2 Answers

Adapter polarity


Boss ME-25, use polarity like boss stompbox.
+ voltage at the ring, and - voltage at the center pin, of the adapter
connector.
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At ME-25 DC socket:


20023597-2ss5ycyvkoajtv035dpuezke-5-3.jpg



20023597-2ss5ycyvkoajtv035dpuezke-5-6.jpg

Sep 12, 2013 | Boss ME25 Guitar MultiEffects Pedal with...

1 Answer

BOSS TU-3 Tuner will not work with power supply or battery


It was probably connected backwards in polarity from a power supply which burnt a diode. These things have backwards polarity of 9v adapters which means positive on the outside of the plug and ground in the middle, unless you have the original boss power supply.If you have a generic power supply, cut the plug off and switch the wires and try it.

Mar 01, 2013 | Boss TU3 Tuner

1 Answer

Used my line6 adapter on boss mt2. there was a little smoke at the ac in. the pedal stopped working. please help!


Which Line 6 power supply? If you look at the specs stamped into the L6 supply you should see the voltage, current capacity, and polarity (if DC). Polarity would have a symbol showing an inner post and outer shell and indicate which is positive....referred to as positive or negative tip. Let me know what these specs are and I can have a better idea of what may have happened. Sounds like it burned out a protection circuit designed to protect the pedal from incorrect power applied. Will it still work with a battery?

Aug 25, 2012 | Boss Mt 2 Metal Zone Effects Pedal

1 Answer

It just wont turn on, and i'v tried other power supplies that deffinately work and it still wont. help!


Use the correct PSC power adapter. 9 volts, 1 amp... not sure of the polarity... searched all over for the spec. The unit draws 900ma so you need a 1 amp supply. Most "universal" supplies will not provide enough current. If you have tried the wrong polarity you may have damaged the unit.

Sep 14, 2011 | Roland Boss BR900CD Digital Recording...

1 Answer

AC power supply polarity for BOSS ME 25 guitar effect.


Center negative. 9.6 VDC 500ma Boss PSA-120S is official adapter.

Mar 07, 2011 | Boss ME25 Guitar MultiEffects Pedal with...

2 Answers

My Boss RC-50 has stopped working. I used the power chord for my RC 50 in my Boss OC 3 pedal and then tried using the chord in my RC 50 again and it won't work. It won't even work with other power...


CHeck the voltage out of the adapter. It should be around 9 to 11 volts. If it is not, it is possible that the OC3 has reversed polarity AND a protector that put a short on an incorrect supply. If so, it could have damaged the RC50 adapter. If the RC50 adapter is putting out correct voltage, then I suspect the inout connector on the RC50 may be damaged or not quite seated. Visually inspect the connector first.

Dec 04, 2010 | Boss Rc 50

1 Answer

I plugged in a wrong adapter to MT-2 i think 12 v. it should have been 9v now it doesnt work is there any way to fix this problem?


Normally the 12 volt supply would NOT damage the unit UNLESS it had the wrong polarity or was an AC type.

Likely damage if these were used is confined to a few small electronic components where the power copmes into the unit.

Repair the unit before putting correct supply as you could damage the correct supply if those parts failed a certain way.

Aug 01, 2010 | Boss Mt 2 Metal Zone Effects Pedal

1 Answer

When i turn on my pedal i can get the clean tone but when i switch the distortion i cannot get the distorted sound...what should i do?


Make sure the pedal has the correct power supply voltage, current AND polarity.

Also adjust the setting knobs as needed.

Make sure the in's and out's are corectely connected... it will work clean if they are backward, but no distortion.

Mar 11, 2010 | Boss Mt 2 Metal Zone Effects Pedal

2 Answers

Pedal works with power supply but nor with a brand new battery


The problem is with a bad power connector.

The connector has a spring tab that touches the center pin when the external power is NOT plugged in. This tab brings the battery power to the center pin. Some of the springs as an alternative act as a switch to a contact for the negative lead of the battery. These suffer the same problem of loss of spring tension and failure to contact.

The spring gets weak and no longer touches and battery power will not work.

Feb 17, 2010 | Boss Music

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