I have checked all the fuses for the radio. The one behind radio and fuse on the floor. All the wires are connected. I dont know what i should do. I was driving one day and it all worked fine, then suddenly lost power.
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Re: I have lost power to my sony cd player in my car
Take the cd player out and run the 12+V to + on 12+V battery.
Run the Ground/Black wire to negative on battery. See if the cd player will turn on. If it does, check your ground in the dash. This is just a good trouble-shooting method to make sure the cd player system board is not fried.
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Typicaly this circuit is fused as it is a power circuit. I would check any inline fuses. If everything is ok and you don't even have power from the radio (before any inline fuses) then i would check all settings, other wise you probably have a blown transistor
did you replace the fuse behind the wireharness if so did you check the fuses in the fuse block on your radio. if so you have checked everything try under the hood of your car there should be another fuse box check in there. if all fuses are good check the ground wire on the radio
I have a Sony CDX GT 530U. I had a problem with no display and I thought no power period. I did not try to install a CD, so maybe I did have power to the CD motor but no display. This was frustrating because I could get the old factory Nissan radio to power up and work so I thought I had a dead Sony unit. After a lot of monkeying around, I discovered I had blown a fuse while installing the unit (you should disconnect the negative terminal of the battery when installing the radio... which I thought I skip, that was a no no.). I had checked the auto fuses, those cheap little plastic fuses behind a panel below the stearing column inside most cars, at least all the fuses I thought went to the car stereo. Turns out I missed one that was labeled "Batt" or something like that, which was the constant power wire to the car stereo. There was another fuse for the Accessory power to the car stereo (the main juice went the key is tuned to ACC or Start position). Turns out the Sony unit display runs off the constant power, or at least the unit on/off button runs off the constant power wire, so even though the ACC power wire was live, the Constant power wire had a blown fuse and the unit would not turn on. Check all your fuses inside the car, I bet that's your problem. Constant power on my Nissan Sentra was a 7.5A fuse, while the ACC power ran off a 15A fuse, but your vehicle may vary. Good luck.
What AMPlifier are you using? Where is the main power wire and ground wire for the amp connected? (an amplifier with 25Wx2 or larger should be connected with proper fused wire directly to battery). I would check the fuses in your car as well (when the ignition key turned ON you should have power both to the Yellow wire and Red wires on the Alpine radio, there will be two fuses you must check in the car if not but I have no idea what car you are driving (one will be the radio fuse) (the second could be marked radio 2, or clock, or lighter ... or a host of other things) so I cannot tell you which ones to check, so look in your vehicle owners manual it should help. What did you connect the Blue / Whte wire from the Alpine radio to?
Well.. if there is smoke coming from the head unit, the head unit could be bad. It odviously may have a wire crossed or a fuse blown, or even the wire harness could be bad. First, check the fuse for the radio on drivers side door, then check the other fuse box under the hood. Make sure all radio fuses are intact and not blown. Second, check behind the head unit to make sure no wires are touching each other and shorting out. Third, if nothing else helps, buy a new head unit & wiring harness :]
The unit will have 2 fuses, or at least a second power supply that is generally connected to continuous power, best bet is straight from the +ve batt terminal. If this power supply has been disconnected or has a blown fuse, then you will also loose memory functions from you radio.
Check first under the bonnet for a memory backup fuse holder that has generally less than 1 amp fuse,
no luck, then about the rear of your fuse box for a fuse holder,
or worst, behind the unit up under the dash. The wire from the back of the stereo on Sonys is generally the RED one for memory backup
restoring this power supply to your stereo will then allow for all your presets to be retained in memory
Good luck, happy to talk to you more about the problem, a "FixYa" rating will help my profile