How To Repair Car Amplifier Channel
If your car amplifier is not providing whatsoever audio or power and the wiring side of things is perfectly fine, chances are the amp is in protection way due to beingness blown. A blown car amp can have many possible causes it can exist a mechanical failure interms of article of clothing and tear on the parts or accidentally. Here are the top mutual causes that blows out a car amplifier.
i) Crosswirng power and ground wires.
2) Too low ohm impedance.
3) Clipping running into a distorted signal, basically gain not setup correctly and turned all the mode up.
4) The speakers wires accidently shorted.
5) Amp beingness mounted onto the box parts internally getting damaged from vibrations from the subs.
6) Overheating.
Now that you are aware of the dissimilar causes, it will give you an good indication to whether or not your car amp is diddled out. Before we explain how you tin gear up it, ensure that the amp is getting at least 12 volts by using a digital multimeter to measure the volts at the terminals on the amp. If the voltage is 12 or higher thats fine. Now the almost common part that blows within a car amp is the mosfet transistors. All you need to practice is look at your amps service transmission which you tin can find online and find out the type of FET Mosfet transisters information technology takes. So yous simply test which ones are bad with a multimeter and supersede them i by 1. Most likely takes effectually xv minutes to complete if you are expert with soldering.
1) Flip the amp over and remove all the screws belongings down the back console.
ii) Lift of the console and place it to a side.
three) Locate all the mosfet transistors. There will be usually at the pinnacle or bottom in blocks of two mounted onto a metallic heatsink held by a clamp and a screw.
4) In most cases you lot will need to remove the circuit lath from the amp. There will be screws property information technology down, unplug whatsoever connectors if you lot demand to. Remember to take a flick of the amp earlier hand and then you know how to put it back together on your phone. This will makes things easier for you later on on.
5) Employ a desoldering pump to remove the sometime solder from the mosfet transistor. At present that it is removed, test for shorts by setting your Digital multimeter to ohms between all iii pins. That style you will know which ones to replace.
6) Cut the legs of the new mosfet transistor and position information technology into inline with the section on the circuit board. Using a soldering iron, solder downwardly the three points neatly, ensuring that the connections don't bridge across.
Do the aforementioned procedure for all of the unlike mosfet transistors. Replacing all the bad ones will 99.9% prepare your blown expressionless car amplifier the very starting time fourth dimension. And so definitely give this an attempt if you lot take a dead amp that you want to fix but don't want to send information technology in for an expensive repair. If yous demand any help or have any questions then please let us know in the comments.
Source: http://how-to-install-car-audio-systems.blogspot.com/2016/12/how-to-fix-blown-dead-car-amplifier.html
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