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BassMunky

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  7. 2 0f 3 fuses blown.. help

    in Sundown Audio - GREAT Amps/Subs! GREAT Customer Service!

    Posted

    12 hours ago, audiofanaticz said:

    Because the fuses are all internally connected as 1 fuse block inside the amp, there maybe 3 fuses but the amp sees it as 1 90 amp fuse instead of 3 30 amp fuses.. Similar to how some amps have two 1/0 gauge power and ground outputs, or some monoblocks have 2 positive and 2 negative speaker wire outputs even though they are internally connected as 1.


    So if 1 fuse is still good the amp will continue to play, though it is taking on the work load of the other 2 blown fuses plus its own.

     

    All fuses are not created equal, just because they are rated at a specific amperage doesn't mean they will blow at said amperage. In this case a 30 amp fuse might blow once current surpasses 30 amps for a period of time or it might blow once it surpasses 40 amps of current for a  specific time. So that 1 fuse that was still good maybe a much stronger 30 amp fuse than the other 2 for one reason or another, could be a different brand, or a different production run made at a different time even..

    If grounded out the outter shield of the RCAs fixed your engine whine that leads me to believe you hot swapped your rca cables at one point or another. 

    Hot swapping your rca cables is when you unplug and plug them in when the radio/amp(s) are turned on. Which is fine to do as long as you don't touch the center pin of the RCA cable on anything grounded such as the vehicle body, battery ground, or even the outter rca terminal when you goto plug the rca back in (which can happen very easily without you even noticing).
    This is very similar to blowing the pico fuse on Pioneer radios, but it can happen to other brand radios as well when you hot swap the rca cables and short out the positive RCA cable signal.
     

    So if I was a betting man I would say you unplugged your RCA cables with the stereo on, grounded out your RCA cable one way or another which not only fried a trace inside your radio but also caused you to short out your amp and blow fuses.

    Its really the only logical thing since both issues appeared to happen at the same time.
    Of coarse Im sure you didn't do that, no one never does that and things just blow on their own!

    the thing is that the fuse went while i was driving home one dy after work about ten minutes.  im not disagreeing with anyone just trying to get a better knowledge of what really happened.  I haven't touched the rca for a while that why.

  9. Dubya Tee Eff....?

    in General Audio - Can't find a category for your question? Ask here.

    Posted

    On 11/17/2009 at 4:13 PM, zz_3.14_zz said:

    Ok...so I got home a little early today and pulled the hu and tried to ground the rca's....lets just say, that didn't work. Nothing blew up, but just the same, its not fixed. But I did remember I had a 3.5mm to rca cord laying around so I put that to some good use.

    mp3 player to amps = no ground noise

    hu to amps = zomgwtfbbq!

    Thanks for all the help guys. Now I'm off to whore myself out to make some money for that new HU! (AVIC F90BT | Yea, I know..another Pioneer)

    Wat fixed it?

  14. 2 0f 3 fuses blown.. help

    in Sundown Audio - GREAT Amps/Subs! GREAT Customer Service!

    Posted

    On 1/24/2020 at 5:36 PM, deathcards said:

    all i did was add a time stamp? but on a serious note you could have a defective coil which slowly died versus say something as catastrophic as the wrench melting in seconds. tinsel lead could have come in contact with something it shouldn't.

    As for your fuse question it is wired in parallel (correct if i am wrong here folks) so your fuses blew in order of weakest to strongest in an attempt to protect your amp and by the 3 fuse it was making a racket as you could tell. I would check ground first remember to disconnect the rca's before you disconnect the ground, i would check the resistance of your speakers, then inspect your wires, and finally try a different input source.

     

     

    edit spelling

    Will try been busy

  15. 2 0f 3 fuses blown.. help

    in Sundown Audio - GREAT Amps/Subs! GREAT Customer Service!

    Posted

    4 hours ago, deathcards said:

    all i did was add a time stamp? but on a serious note you could have a defective coil which slowly died versus say something as catastrophic as the wrench melting in seconds. tinsel lead could have come in contact with something it shouldn't.

    As for your fuse question it is wired in parallel (correct if i am wrong here folks) so your fuses blew in order of weakest to strongest in an attempt to protect your amp and by the 3 fuse it was making a racket as you could tell. I would check ground first remember to disconnect the rca's before you disconnect the ground, i would check the resistance of your speakers, then inspect your wires, and finally try a different input source.

     

     

    edit spelling

    Ok gonna try tomorrow.  Mahalo

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