Question about BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay Pedal

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Boss Dd-3 with power but no signal - BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay Pedal

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Posted on Jan 02, 2017

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SOURCE: My boss dd-3 pedal only works with a 9v battery.

You will have to test the adapter with a volt ohm meter to make sure it is putting out the proper voltage. It should be as close to 9 volts as possible. Also make sure that thehole in the plug is negative and the outside is positive. Is it the right adapter? I don't have a schematic for this model but www.schematicheaven.com has one for a DD-2. Hopefully they haven't changed too much. If you decide to repair it yourself, check the adapter first then check for a bad solder joint where the adapter plug is soldered to the circuit board. Hope this helps somewhat.

Posted on May 14, 2009

  • 5603 Answers

SOURCE: My boss DD-3 makes a

Check your power source or battery. The sound is probably due to the internal processor recycling due to watchdog timer. If power is OK, then service will be necessary to repair the problem.

Posted on Apr 03, 2011

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1 Answer

Battery problem


DId you remove the plug from the input jack to turn the pedal off? If so then you may have a bad input jack.

Jul 03, 2013 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

Why is my vintage boss dd-3 very quiet on the repeats even when level is turned up full?


Assuming you have the feedback level turned up....can you hear any difference at all when adjusting the feedback?

Aug 17, 2012 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

My boss DD-3 makes a strange tapping sound on all modes. tapping sound gets more frequent when i turn the delay time pot to the right. its like a little tap sound getting into the circuit with the guitar...


Check your power source or battery. The sound is probably due to the internal processor recycling due to watchdog timer. If power is OK, then service will be necessary to repair the problem.

Apr 03, 2011 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

My Boss Digital delay pedal won't stay on unless I keep my foot on it.


This is likely a failing switch under the pedal. Either the toggling mechanism is broken in it or if it is a momentary type it probably has "contact bounce" that exceeds the what the de-bounce circuitry can handle.

Mar 08, 2011 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

My light turns on, can't switch it off, no effect or signal coming through at all. It appears to be in in working condition, just don't know what is going on.


First thing is to check that powr adapter is the correct one and/or battery is good. Light will come on with near dead battery or wrong power adapter... Wrong adapter can damage the unit.

Dec 12, 2010 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

At low input,repeats from dd3 are clean but when guitar is cranked repeats are unpleasantly distorted.How can I cure this?


You are probably overdriving the pedal. Reduce the amplitude INTO the pedal and AMPLIFY it more AFTER the pedal.

When digital conversion is done from the input and the input exceeds the input voltage capabilty of the A-D convertor, it effectively "flattops" just like your overdrive on a guitar amp.

Your guitar may be very "hot" having high output. One needs to keep the signal levels in-bounds of what the hardware can handle at EVERY point.

May 13, 2010 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

My boss digital delay works when engaged but no sound when not


sounds like the true bypass line has been damagd. Should be easy enough to fix. Pop open the unit and do a visual inspection first, if nothing is noticeable then do a continuity check with an ohm meter from input to output with the delay efffect off. If you don't read a short in this situation then your problem lays within the signal path and its switched path.

Jan 17, 2010 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

Boss DD3 - LED switches ON but the signal remains dry.


Have you tried a new battery?

If you have experience with electronics then open it up and start testing all the components with a digital multimeter to find the failed component(s).

Unfortunately the newer DD3's are harder to fix then they once were. There is no place to point you other than just to start testing everything. Hard to say what has failed. The signal into the input of the circuit may simply be shorting to the output. Maybe the switch or switching circuit has a fault.

Here is the schematic as a reference: http://www.8bitsindgenug.net/boss_dd2.png

Dec 29, 2009 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

1 Answer

My boss dd-3 pedal only works with a 9v battery. When I hook it up to the 9v apaptor, (a boss) it freaks out and does nothing. Can you help? Everything seems solid. the jack doesn't wiggle or anything.


You will have to test the adapter with a volt ohm meter to make sure it is putting out the proper voltage. It should be as close to 9 volts as possible. Also make sure that thehole in the plug is negative and the outside is positive. Is it the right adapter? I don't have a schematic for this model but www.schematicheaven.com has one for a DD-2. Hopefully they haven't changed too much. If you decide to repair it yourself, check the adapter first then check for a bad solder joint where the adapter plug is soldered to the circuit board. Hope this helps somewhat.

May 14, 2009 | BOSS AUDIO SYSTEMS Boss Dd-3 Digital Delay...

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