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Help!!!! i have a crunch v3400 and when i hook it up the power light comes on and then its switches 2 proctect.is the amp bad or whats the deal?

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It's likely that the amplifier has shorted output transistors. To eliminate other possible problems that can cause an amp to go into protect, read through the following page.

Amp In Protect - Troubleshooting

Posted on Jul 31, 2008

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I have a problem that something is like in short circuit although nothing is hooked up in amplifier that sound is in speakers and in headphones its something inside.Its working normal only that sound of...


Hmm, crunch is bad.

There is the slighest chance that a common control may have developed a high-resistance or 'dead' spot and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.


If it still doesn't work you might want to prove if its a low-level signal issue or a high level amp failure. One way would be to run an RCA cable pair from the Tape Out to any other device (even a TV) you might have that accepts an audio input.


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Try disconnecting everything but the power connections. If the protection light still comes on, then there's a problem in the amp. If it goes out, then there's a problem elsewhere. In that case, hook up one speaker cable at a time and power on. If the protection light comes on, then either that speaker is bad, or you've got too many speakers connected to that one amp output. Too many speakers connected together can cause an overload and trigger the protection circuitry, or worse, blow out something out.

Hope this helps, and please rate my advice.
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