Sure there are those old, or emergency radios which you wind up this handle a bunch of times and it will run for a little while!
Because something's wrong with it. Without a chance to actually look at it and diagnose it, we have no way of answering this definitively. Either there's an issue with the power supply, the head unit, or the speakers.
No, a 500 mA supply can only produce a half amp maximum without going into an overload condition.
that card normally requires a 350w power supply but there are cases of it running on a 250w without problems. If you have a really good PSU then it may work but id guess no, it wouldn't
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the radio is wired to the headlight power supply wire, that's why it will only come on when you turn on the headlights. my buddy did this to his truck in the best buy parking lot when it was getting dark out.
You probably melted a fusable link . Check by the battery or on the firewall . It will be a wire with a melted spot by where it bolts to the power supply
An amp with no power supply? No. Can't be done. An amplifier increases the current of the input signal, and to do so it needs power to do it with.
No No No. If your supply can give .2A, and you need 2 Amps, your supply's not going to cut it.
Plug a booster pack or car charger with a power point adapter into the power point (cigarette lighter) of you vehicle before disconnecting the battery. This will keep power to your radio and security system. The bonus is it will even save you radio presets.
Disconnect the battery. Warning: If you disconnect the battery for an extended period of time, the radio will not work and you will need to enter a security code to get the radio to work again. The dealership will charge you $$ to supply you with the security code.
The radio shares the same power as the cigar lighter. When car is off neither work. Putting power into the plug fires up the radio. This means that using a solar panel to keep the battery up will not work on this car w/o putting the lighter power feed onto a battery supply fuse at the fuse panel.
Radio controlled airplanes need four main ingredients to work. A power supply, usually a power battery pack or just batteries. You will also need to hold a transmitter that sends the information waves to the antenna or reciever on the plane. This sends the signal to the motor, wheels and propeller for turning, steering and operating your plane.