As you know a SMPS of a computer converts AC signals to DC signals. Here a capacitor is used to filter AC signals.
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check starting capacitors. Check voltage supply with a voltmenter from outlet to compressor.
Correcting output on a plus computer is easy. All you have to do is right check and see the right answer.
Replace the four capacitors in the computer or replace the computer itself
You first have to know the type of power supply your are testing. Then you could test whether the power supply is receiving anything from its source. Next check if it is giving any output.
A common cause for shutdowns is the CPU overheating. Check the fan to make sure it isn't spinning slow or seized, and that there is no dust in the heat sink. You can also check that the heat sink compound (the paste between the fan and heatsink) hasn't broken down. Or your power supply could be going bad. It gets hot and then shuts down. It might also be a bad power supply fan, that is the power supply might not be getting hot because of a problem with the power supply but because the fan isn't cooling it properly. Also, check for bad capacitors on your motherboard. Capacitors are small, cylinder-like things with an aluminum top, with some type of molding or lines on the aluminum. There are many ways to find out if you have bad capacitors: 1. A brown, crusty substance on the capacitor or motherboard 2. The capacitor is swelling 3. The capacitor "venting" 4. Signs of overheating 5. A pop, with a hiss after it coming from your computer, or even a small explosion 6. Capacitor blows off its casing If any of these symptoms appear, repair the motherboard ASAP. Power supplies also have some capacitors, but it is strongly recommended to avoid these unless you discharge them first because they can still have a charge in them, which could be deadly.
Check the power supply, if its good then your bios might be at fault.
The BIOS (Basic Input Output System) runs the initial disc check and starts the required programs when you switch it on.
Check your Motherboard for bad capacitors. Check out www.badcaps.net for details. Swap power supply. (Another Capacitor issue) Video card could be dying, but not likely. Remove any modems you may have, (Lightning or other surge from phoneline fried the modem and it is hanging the system) Exorcism (Kidding)
Most probably, the thing is full of dust. Try opening the case (might void your warranty) and blowing off the dust. Also check for anything else that is amiss. You might want to contact a friend who knows better. If you do not want to do that, (or find that everything is in order) try these: Make sure that nothing really happened. Probably the computer did turn on but the output devices didn't. Check your monitor. Check your video card. Check the cables. Try connecting your computer to another monitor. Check the power supply. If your computer is configured to beep when it is turned on, check if the beep came. Otherwise, bring it to someone who knows better or a repair center.
Yes. You can check the datasheets and will see that MKP has better properties than MKT. But MKT is cheaper.
Make sure you have the ignition supply for the injectors. Check the starter signal input to the engine computer.
The obvious answer would be the Power Supply Unit (PSU). This starts the computer and without it nothing can work. On the other hand if you have a faulty mother board or RAM, the computer would switch on but nothing would be shown on the screen. The PSU is found on the highest part of the tower. Also check the the switch (if it has) is switched on, and that the power supply cable (the 3 pin one) works.