Question about Pyle PLA885 Car Audio Amplifier

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Pyle PLA885 amplifier blows 25amp fuse. Ideas?

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  • cprv Sep 24, 2009

    Thanks for the reply. The amp is mounted on its side in a Motorhome. It's not touching anything, been there for several years now. Blows the fuse on the amp itself. Cheaper to just replace it for us. We are a RV repair shop.

  • cprv Sep 24, 2009

    Can you tell me if a Pyle PLAD142 will directly replace the old PLA885? Thanks for the help.
    Donn
    Central Point RV

  • David
    David May 11, 2010

    ok what fuse is it blowing then fuse on the remote wire in the fuse box or the one on the amp its self or the one right off the battery under the hood that one is normally about 10 inches away from the battery.....but if you have the prob i had your probably blowing the one on the amp my prob was i had the amp just laying in the trunk and it would move around when i hit bumps or turned it would slide and blow the fuse... i found that this was because when it moved it would hit a bolt in the trunk flooring and ground itself out try mounting the amp so it doesn't move that may be your prob. Good luck

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Make sure you have a solid ground sometimes having a loose or not fully good ground will couse this check the following ... is it connected to a semi or fully painted surface .. is the ground cable the right size .. your ground should be the same if not bigger then your power wire with a 8 gd power wire you should use 8 gd ground also make sure your using the right size power wire if your going to small this can happen

Posted on Sep 26, 2009

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To much power draw

Common symptoms

1. a short in the power line causing the amps to go haywire, i have seen a short in a 8 guage wire before where the seats had been removed for the installation and when the seats were put back in they caught the wire under the bolt, amp worked fine at low lvls but at higher volume the short caused the fuse to blow, verify there is no shorts,

2. speakers not set in proper configuration for the amp, you may have it setup so that they are at 16ohm or 1ohm and the amp can't handle that ohm specs causing the amp to over load and draw more power.

3. Blown sub, a blown sub can cause it's ohms to go crazy while it's moving causing the amp to overwork itself. however the sub may still sound fine. you can check this by hooking a multimeter up to both posts of the sub set on ohm and push the speaker cone up and down looking for spikes on the ohm meter. ==This is a very common cause of the problem you are describing.==

Posted on Sep 24, 2009

  • JollyRoger00
    JollyRoger00 Sep 28, 2009

    Before you attempt to change the amp, i would test the speakers,

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Signs of a short, did any wires touch while you where hooking or un hooking the amp? if not then the internal power supply probably has a short in it and needs to be repaired. you can swap the fuse for a good one and hook it back up and make sure you don't touch any wires and if it blows it again then your issues is internal and will need repair if it doesn't and everything seems fine then wires could have touched or the amp was ran past it's limit and blew the fuse to protect it self. good luck and ask any more question you have

Posted on Sep 24, 2009

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