I woke up this morning and after i turned my car i realized that the subwoofer wasnt working. The black wire may well go straight to the car body—it’s the ground. This left the stereo in mute mode. Depending on where your amp is located, it may be easy or quite difficult to check the amp. You might want to start by checking the fuses. The other thing is that the ground wire is not making contact. Some amps have in-line fuses while others are fused at the amp itself, and some installations have more than one fuse. Remove the wire and use sandpaper to clean the connection. How to fix Car Amp for no sound? The buttons on the car stereo faceplate stopped working. If your car radio isn’t working, or the system isn’t working properly, one of our mechanics can inspect and diagnose the problem, and then repair the system for you. Here are a few common problems and what can be done to troubleshoot, as well as fix them (my fixes are the most common. However, the stereo is not working. A car stereo will always have 3 different power wires going to the deck section. Car amps use plug fuses that are similar to or often the same as normal car fuses. Plugged it in, turned on and it worked fine. Well everything was connected properly so i tested my ground, remote turn on, and battery cable for power, everything was fine. Car Wagon SUV/Jeep Minivan Truck RV/Camper. The fuse is in the centralized fuse block location with all the other fuses. Replaced with an after market radio, still no power. One common symptom of loose o… Cars are unforgiving environments for electronics, and vibration, heat and dust can all cause premature failure. There are usually spare fuses in the box, so you can replace the fuse with the same rated fuse. Make sure that the amplifier is power on. If you have a car stereo that has no sound than we should start by checking that all the wires are hooked up. In some cases, a broken wire or bad connection in the speaker wires where they pass through into a door can also cut off the sound altogether rather than just cutting off the sound to one speaker. If your car has one of these, and you haven’t already checked it, then you’ll want to verify that nobody retracted it when you weren’t looking. Saw a similar post about someone who had the exact same thing happen when she closed her glove-box. I've checked the fuses and they seem fine. Will not turn on. Shut doors can restrict your speakers from operating to the maximum. Turn the ignition key to the accessory setting and press the “Power” button a few times to verify the condition. If you have a car radio that works sometimes, and suddenly cuts out at other times, that can be more difficult to diagnose. There is either still a blown fuse smewhere (car fuse panel will have a radio fuse (switched), and often a fuse for the constant power which can be shared by dashlights, or cigarette lighter (constant). Clock will work and display when "Menu" is pressed. Loose or corroded grounds will usually cause more complicated issues than a total failure, but it’s worth checking before you go out and buy a new head unit. Replace the wire. If you find that your sound comes back on if you open and shut the door, that may be the problem, or it could be a ground issue. I changed the fuse under the dash and still nothing. I have had my subwoofer in my car for about a year now with little to no problems after i installed it. If your stereo does not turn on at all, it could be because of a blown fuse. Another surprisingly common car antenna issue has to do with manually retractable whips. Okay, I installed an audio-in adapter so I could plug my iphone into my stereo with out using an FM transmitter. If you've recently moved to a new area, or you're just trying to listen to one station that you can't receive any more, then an antenna booster may also fix the problem. Trace back wiring from the car stereo’s control head power harness to the fuse block and verify that the wiring is all intact. Because a vehicle is constantly vibrating while in operation, it is easy for connections to become loose or disconnected.You also need to make sure that the wires are able to accommodate the entire power supply needed to operate the speakers. That could be as simple as a blown fuse. I figured okay, must be a faulty unit, the adapter lit up and my stereo worked fine. Is There a Cheaper Alternative to Air Conditioning? Sometimes the amp itself really is at fault. 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