Question about Alesis RA-150 Amplifier

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Mmt-8 alesis squencer

It loosing memories after i record something i close it when i open it again evertything that i record gone

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HI...
Replace the memory battery.

Posted on Jan 18, 2009

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Posted on Jan 02, 2017

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My amp got hit by lightning and is not turning on anymore...what should I do?...I have some experience in electronics


Start with the basics. Fuses, check transformer, look for burnt or damaged parts.
With this kind of thing more than one part could have failed. Indeed you could have more faulty parts than working ones! Or it could be just one thing that's gone!!!

Aug 30, 2013 | Alesis RA-150 Amplifier

1 Answer

My amp turns off when I turn it on


seems the same propblem as my alesis, they got an protection, against noice seems when you switch on your amp `roduces to much noice or something what the protection dont axept

Apr 14, 2012 | Yamaha Audio Players & Recorders

1 Answer

I have an elesis RA 500 it blows the slow blow fuse when i plug it in .any ideas what is wrong?


hi there,
it sounds like the internal transformer has gone.
It's not user replaceable and will require you to take to an electronics store to be repaired.

SAME THING RECENTLY HAPPEN WITH ONE OF MY BITS OF KIT ...... for heavens sake don't just keep changing the fuse time and time again.

Jan 07, 2011 | Alesis RA300 Amplifier

3 Answers

Alesis RA 500 makes a "clicking" sound and no more sound. later it will "click" on again


Clicking sound is a protection relay. This means one of the power amp sections have failed. Or that your speakers connections are faulty

Sep 24, 2010 | Alesis RA300 Amplifier

1 Answer

Audio problems with Alesis RA-150


on bridge mode the speaker impedance should be 8ohms, less than this clipping will happen. try bridging two 4 ohms in series.   
if this happens without speaker connected, u have a power amp section that is trying to draw more power than it can handle. 
as for the second check connections first, otherwise i suspect u have a defective power amp for the right channel.

Mar 12, 2010 | Alesis RA-150 Amplifier

1 Answer

Alesis RA-100 amp is tinny


To test speakers get a 1.5 volt battery and put the (-)wire of the speaker to the negative end of the battery. Then take the + wire and for a split second touch the positive terminal of the battery. You should hear the speaker pop! Listen to each unit inside the speaker, any that don't pop are not working.
If you look inside the amp you may see that something has burnt up. Look carefully at whatever is on the heat sink.

Dec 09, 2009 | Audio Players & Recorders

1 Answer

Amp not powering up


Chek transfomer with a multi meter set on continuity,check primary input across wires AMPLIFIER MUST NOT BE PLUGGED INTO WALL SOCKET...check outputs low readings in ohms are good no readings mean open transformer(buggered

I suspect outpuit stage short as this probably buggered relay in first place

Jan 07, 2009 | Alesis RA-150 Amplifier

22 Answers

Amp cuts out after a while


My Alesis SA-300 started the cutting out when at moderate levels some months ago... Well, Radio Shack has instant gratificaion for those who have one in the neighborhood. Part number 275-249 will do the trick!
http://www.radioshack.com/product/index.jsp?productId=2062483

I replaced the Dong Woo part with the Radio Shack item and the amp is back to its old self... maybe even a little better. Loud, clean and steady.

Thanks to all you who have contributed to this thread.

Steve

Oct 17, 2007 | Alesis RA-150 Amplifier

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