Question about Hifonics BXI 1606D Car Audio Amplifier

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Hifonics BXI1606D repair?

My amp one day suddenly went into protect mode. I troubleshot it and found that the problem was blown MOSFETs. This is the first amp i will repair on my own and i found the problem, but i have a different problem. The MOSFETs are prtected by a metal plate that i cannot remove. Can I just cut the plate off from the heatsink? or is there a special tool used to remove this plating? if u need to see a pic pls let me know and i will email you with a better description of what I am talking about.

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  • Angel Granados
    Angel Granados Aug 09, 2007


  • Angel Granados
    Angel Granados Oct 04, 2007

    THANK YOU very much for the information it was very helpfull. i sure hope i can help you if you have any questions in the future.



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There are two types of metal clamps that are in common use on these type of amps. One of them you can just pry up and off of the heat sink and the other is clipped into a groove at the top back of the heat sink. This is the hardest one to remove and put back on. If there is a small square hole at the top of the clip then you have the hard to remove kind. You must counteract the sprind tension of the clip by sticking a tool (perhaps a small pair of needle nose pliers) into that square hole and pry DOWN (not up) in order to unspring the part that is clipped into the heat sink. Be careful you don't snap off the end of your tool. It takes quiet a bit of pressure to unclip it. You might use a small flat tip screw driver to pry up on the part that is clipped to the heatsink at the same time you are prying down at the square hole. This is not a pretty process and it is just as hard to put it back on after the repair. Maybe even harder. If anyone knows of a better way to do this please let me know too because these clips are a royal pain in the butt to deal with and I sure wish I knew of a better way to do this. Maybe the manufacturer has built a special prying tool that will do it much easier, but I've never seen one. Good luck and be careful you don't break the clip while prying because that opens a whole 'nother can of worms.

Posted on Aug 03, 2007

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There is an easier way. this can be made from bicycle spoke smaller angle is about 3/16 inch . slightly sharpen tip not too much.

Posted on Aug 09, 2007

  • oscar herrera Aug 09, 2007

    heres how.
    ok guys let me know how it went



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