Question about Legacy Audio Blue Diamond LA580 Car Audio Amplifier

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No Power My amp appears to have no power as the Green LED and the Blue light on the top of the amp do not come on and the subs don't work. The red LED is not on either. I have 14.05 volts DC input and 12.71 volts DC to the remote terminal. The fuse on the unit is good.

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Re: No Power

Hello jasper100, Have you opened the unit to take a look inside? Since you dont have a blown fuse we cans assue the a short has not occured. Now I would chect to see if the voltage regulator in the amp has voltage coming from it. It may not in that case you may have to remover the old regulator and put in a new one just to get to the point of properly troubleshooting this amp. I would suggest that you get a schematic for this unit and use a multimeter to look at the voltages in the power supply section and see which sections have no rail voltage (12v supply voltage). I would also advise checking the remote to for regulator failure.

Posted on Sep 10, 2007

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SOURCE: amp problem

Make sure the amplifier setting "disable" is off then turn off remote power and turn back on.

Posted on Dec 24, 2007

  • 1 Answer

SOURCE: ps 52 kx power supply will not hold load

thank you for your help . I have already fixed the power supply I double checked the transisters and found three bad so I replaced all the power transisters and it is fine . thanks again bob

Posted on Nov 19, 2008

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I have checked all connections to my amp battery,head unit,remote or trigger wire,fuses,power cable,rca leads,ground wire,amp has a green led light on it indicating if it works ok,red if it`s not,light...

Your amp could be in protection mode! Sometimes turning up to high or wires touching will put in protection mode! It will have to be unplugged for a day or two to drain all power out of the memory. Leave accessorie/ignition wire hooked up, just not power and ground wiring. It should reset itself.

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I have a power acoustik bamf 1600/4. not working 5 hours later

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Sometimes clicking, or popping sounds from subs are caused by over excursion of the subwoofer, wich can be caused by ultra low frequency, or going below the tuned frequency of your enclosure.

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Red Power Protector light

Hi, the only way i can see the amp resets the stereo is that power is dropping. The amp should have its own wires directly to power/battery so as to not affect anything else.

On the protect, try to disconnet all the speakers, make sure the power is OK. If it appears to work, the there could be a problem with speakers/cables. Try a different speaker to see if it works. If the problem continues with speakers off, a different speaker etc, then there is a problem with the amp. Hope that helps

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1 Answer

RED Port light on AMP?

are you sure its not PROT?
the amplifier is protecting itself from fire because of something.
Disconnect the subs. and turn on.
if it comes on normally, the subs are at fault and will need attention. If the light still stays on, you hafe probably blown an output on the amplifier and it will need repair.

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2 Answers

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It appears that the amp is going into protect mode. To eliminate external causes, read through the following page. Let me know if you have any other questions.

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Oct 10, 2008 | Car Amplifiers

1 Answer

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It sounds like part of the power switching circuit has failed. Your options would be to have it repaired/replaced or to try to repair it yourself. If you want to try to repair it yourself, visit the following link and then respond here. You will need to have the amp powered up and you'd need a multimeter to measure the voltage at several points on the board. A good quality photo of the circuit board would be helpful.

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1 Answer

Amp has Red LED light on.

Disconnect all speaker wires and signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

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1 Answer

Power light

This could be a DC offset condition. Check you manual for what this means. Or other condition. First Disconnect the Subs and try it. If it still goes red then disconnect the RCA's and try it again. If the Led continues to go red after the click then the Amp is hosed. The Click you hear is an internal relay that cuts the subs in after a dely so you do not get the turn on THUMP of the radio at your subs.

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