Question about Legacy 2CH 800W AMP Car Audio Amplifier

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Legacy la590 amplifier

The amplifier stopped working one day. I am not sure if it was a short or something. the amp will not power up at all. theh power wire and remote turn on lead receives power and signal. (both tested) I not sure if it is a power supply or what!

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Anonymous

Phuck you all!!!!!!!!!!!!!!!!!!!!

Posted on Nov 02, 2008

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Ok If the power wire as well as the remote wiring was checked then you know the problem has to lie within the amp?? Yes it does. Do you know how to check b+ lines with a vom?? as well as use a schematic to trace one curcuit to another?? If not its best in my mind to have a pro look at the amp but if you really wanna try to see if theres something burnt in side by all means open it up look around and if you dont see anything out of normal such as burnt things crispy parts or fried wire then its time to unistall the amp and take it to your local repair depot. Now your local repair person may or may not be a sspecialist in auto amps?? If not My advice would be to ship your unit directly to the manufacturer for repairs. First thing you wanna do is look in the owners manual under troubleshooting . it will tell you where to call and if a RMA is needed(RMA means Return Materials authorization).Or contact the company at 1-425-788-0932 or online at [email protected] Good Luck

Posted on Apr 11, 2006

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You want to verify your wiring first. Use a volt meter to make sure the power and ground are good. You can jump the + to the Remote to bypass the head unit(after unhooking the remote wire). If at any point you had your speakers short out or wires hit together it will have smoked your power supply and damaged it internally. If you end up verifying the power and remote are working right and there is still no amp turn on, measure the fuse for resistance. Should be 0 ohms. If the fuse is good, the power/remote are good, then the amp is internally damaged. Any number of things could be wrong. Good luck

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Everytime I cut it on. It cuts back off like there is something wrong with it


If you turn it on and it clicks right back off you may have a short. Make sure the wire panel does not have any straggler wires going from one connector to another. Also you may have a very weak fuse. Check the fuses in your amp and at the battery terminal. Make sure the power, ground and remote wires are solidly connected. Make sure that ground is tight. Is the deck shutting off at the same time your amplifier does? The remote wire off the deck powers that amp so if the deck is also cutting out the problem may be the deck and not the amp. If this is the case then run through the steps I listed above but with the deck as well.

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Hello beaugarcia26,

Unless the amp itself is defective, there's a short or ground somewhere.

First disconnect the speaker wires and RCA (or high level) inputs, leaving just ground, remote turn-on and power leads connected. Then see if the amp powers up normally. If it doesn't check the ground with a multimeter and make sure it is good. If the amp powers up normally, check the speaker, speaker wires and inputs for shorts or grounds.

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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/mark_b53a7494531bf96d

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My 2000 watt nitro amp just stopped working need help


Think about anything out of the ordinary that may have happened the day (or day before) it quit.
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  • Did someone mess with your system?
  • Smell anything odd?
  • Especially loud?
  • Did it quit mid-song or did it work yesterday and not today?
Assuming nothing special, here are some diagnostics you can perform. At the very least, they will help tell you what the problem isn't, First....

Eliminate power supply problems.

Use a meter to make sure you have power to your amps +12v terminal. A meter is preferred over a test light to confirm a full +12 volts.

Make sure the ground terminal is grounded. A meter with a continuity test option is best for this.

If either of these fail, trace the wires to find the fault. Large amps like yours normally have dedicated power cables. These cables usually have an additional in line fuse close to the battery. Check it.

If they pass, double check the amp fuse.
Pull the wire (usually blue) from the 'remote' terminal on the amp.
Then try jumping the +12v line to the remote terminal.

If it still doesn't power up, check for signal shorts.
Turn the gains down low.
Pull the input lines and try the +12v to remote jump again.

Next pull the speaker wires.
Your amp should now have only two wires and a jumper attached to it. Try the same jump.

If it still fails, the problem is in the amp itself and (I'm sorry to say) leaning toward the serious.

Hope this helped
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