Question about Alesis Sr 16 Stereo Drum Machine

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My Alesis Sr 16 was working fine a month ago, I pulled it out again, and it just wont turn on. The adapter works fine (I tried powering a guitar pedal with it). Is there a battery or some easy fix I could try?

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While your test running a guitar pedal is a partial test, the SR16 takes more current than a guitar pedal so the test may NOT be conclusive. When troubleshooting, always check all possibiliities as one can be led on a merry chase and spend a lot of money.

First thing is to check the input power connection. Many of these don't get fully seated and fail to connect.

The most common thing is to use the wrong adapter. ALWAYS make sure the brand on the adapter MATCHES the device manufacturer OR verify the POLARITY voltage and current rating against that marked on the device. Unfortunately most of the power connectors seem to fit even though they are wrong ones and some have larger hole in the fitting than the pin and fail to contact.

There is likely a battery backup within that PROBABLY requires soldering to change. It should be good for at least 5 years. Usually it will NOT prevent the power from turning on.

Posted on Aug 30, 2010

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I am not getting any sound with my used Alesis SR-16. I am getting display but just no sound. Help!


Many people have had this problem WHEN they substitued a replacement power adapter.

The CORRECT adapter MUST supply 9 volts AC, NOT DC at 830 ma or more.

The AC is converted inside the SR-16 to both + and - power to run the internal circuits. IF you have connected a 9 v DC adapter, it will NOT have damaged anything, just get the CORRECT adapter and all will be well.

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Make sure you have the correct power adapter for the unit. This unit takes a 9 VAC, 830ma adapter. It will NOT work with a replacement, universal or DC type adapter.

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Here is a link to a discussion about this that will help:http://www.soundonsound.com/forum/showflat.php?Cat=&Number=679914&Main=679565 A 9 volt A.C. 3.2 amp power supply should work for you. Just remember A.C. not D.C. is required.

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These of course have to be connected to an external amplifier and speaker.

Check that your amp is working first.

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Buy the correct adapter that matches the voltage AND current requirements of the unit. MANY universal ones do not and the original MAY have built in filter that universal does not.

You MAY also need to do a factory reset on the unit.

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The distorted and low volume output plus noise is usually caused by using the wrong power supply adapter. The Alesis SR-16 takes a 9V "A/C" supply not "DC". The A/C supply provides a negative voltage swing which wouldn't exist with a DC supply. So check and make sure you have 9V A/C output supply not DC.

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I have never experienced this problem, but I know that you can reset the SR-16 to all default settings by doing something like holding down play when powering up. Try that & I'll look into the matter and get back to you with a definite answer. Peace and good luck until then.

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