Question about AudioSource AMP-100 2-Channel Amplifier

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I have 3 Audiosource Amp-100 that have failed out

I have 3 Audiosource Amp-100 that have failed out of 10 that I own. None of them will turn on at all. I have replaced the fuse but it just blows again. I am a fairly handy person and have the tools/equipment to test and repair myself. I just con't know what to look for our how to test electronic parts/components. I would say that the cost of the amplifiers would make having them fixed by a repair shop cost prohibitive. Any suugestions?

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When the fuse keeps blowing you have an overload. The cause of which is either in the power supply or the main amp. It will almost for certain be a semi-conductor of some type acting like a piece of wire. A multi meter will show up a most faulty parts with this condition. On the Ohm setting applying the test probes to transistor terminals (E,C,B) you will get a responce like you had touch the probes together! The power transistors or whatever is on the heatsink are good at going short circuit, as people often short the speaker wires together.
Don't forget to check for burnt or damaged parts too.

As a rule of thumb with transistors when testing on a meter (1K setting) (best with moving coil scale meter than a digital) apply to base (B) and then to C & E you should get an ohms reading. If you don't get any reading (both ways) it's dead (open) and if the meter goes full scale - it's shorted.

Posted on Aug 01, 2010

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1 Answer

Where do I start testing?


I would check if the amplifier somewhere gets hot. Most likely with a certain temp the amplifier will go into protection, Avoiding damage to the vital parts.
When you can find the place where it becomes hot, perhaps you can see if a transistor, or am integrated circuit is not correctly fastened. Before fastening it, perhaps you should apply cooling paste. (Like you use between a microprocessor and the van)

Perhaps it is only running hot, because you want to much power?
To loud.

Jul 25, 2014 | AudioSource AMP-100 2-Channel Amplifier

1 Answer

Audiosource amp 100 on lower volumes right speaker louder than left speaker 2.1 setup


The problem is not due to how the circuitry is configured; the problem is due to failure of some element in the right channel amplification circuit. This will require detailed troubleshooting to correct.

Dec 07, 2013 | Audio Players & Recorders

1 Answer

Audiosource amp will not turn on


Ground and Remote wire ? Common issues I have run into.

Mar 24, 2013 | AudioSource AMP-100 2-Channel Amplifier

1 Answer

I have an audiosource amp 350 watts the volume is not as loud as is should be????


How loud do you expect it to be?

More watts doesn't mean more loud but it gives you more headroom for cleaner reproduction of very loud passages. Distortion will kill a speaker faster than clean signals will.

http://en.wikipedia.org/wiki/Audio_power

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Audiosource-AMP100-Amps-manual/id/18809dj391/t/2/

I don

Mar 26, 2011 | AudioSource AMP-100 2-Channel Amplifier

1 Answer

Looking to hook up an audiosource EQ100 to an a sony cass deck


Simply place it in line with the analog input. Or install it in a Tape Loop on your integrated amp/receiver and attach your tape deck to ITS tape Loop.

Ins to Outs


Receiver Tape Out (Rec) - to the External Processor (EQ, whatever) Preamp-, Rec, Line-In;


Receiver Tape In (Play) - from the External Processor (EQ, whatever) Preamp-, Play , Line-Out.

Be advised, using analog processors on digital-capable multichannel elcetronics will only work for analog 2-channel sources.

Mar 05, 2011 | AudioSource EQ-100 Home Equalizer

1 Answer

I have "cooked" (i think)


When the fuses blow like that suspect an overload in either the power supply or main amp stages. I think you might have damaged one or more of the output devices. They can develop faults quick if you're using the wrong type speakers or have faulty wiring to them. The main cause of fuse blowing is a semi-conductor device that is acting like it is a piece of wire. For instance an output transistor when connected to a multi-meter on the ohm scale, will show a full scale deflection, just like if you had touch the two test probes together.

Nov 20, 2010 | AudioSource AMP-100 2-Channel Amplifier

1 Answer

I have a audio source amp 100 on a volume control . it get real hot after being on for just a few minutes.


It is normal for power amps to get warm. Overheating can be caused by deffective speakers, or internal leakage on the transistors. Does is produce normal sound?

Nov 23, 2009 | AudioSource AMP-100 2-Channel Amplifier

1 Answer

My audiosource 2 channel amp is dead in the left channel


Hi...
There's not alot of innerds on these amps.
They use a TDA7294 amplifier chip in the 50 WPC version and I have one here with both outputs gone bad.

The chip is cheap (<$10)

Apr 01, 2009 | AudioSource Amp Two 2-Channel Amplifier

2 Answers

Amp 100 Line 1 in problem


Hi JamesOBrien

That is a strange problem you have indeed. The amp switches automatically from one input to the other, with default to input 1. You say the source sound dips low, is this a source from another integrated amp, where the AMP100 is working as a zone 2 device? . Are you using it as a zone 2 amp, and plugging other devices in the zone 2 area? and lastly, are you using auto on functions? Let me know, and we may be able to figure it out for you.

If it is new, then it may be worthwhile swapping it over for another by the supplier of the amp

regards
Graeme

Mar 31, 2008 | AudioSource AMP-100 2-Channel Amplifier

1 Answer

Center channel speaker


Is the amp already used for L R? If so, you either need another amp for center, or set your Sony for stereo mix down. I have mixed the center channel into my main LR in the past and found there were terrible phase cancellations, so I suggest you switch to Stereo, or use a separate amp.

Regards
Peet

Jan 13, 2008 | AudioSource Amp Four 2-Channel Amplifier

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