Korg emx-sd 1 will not turn on.

hot connections indicate a short or bad connection ( like an arc welder )
loose wires or solder dry joint or broken wires creating a high resistance and heat in this area

It's about hardwares.
Wiring connection sockets is loose.
Inside the korg PA50,Wiring connection to the keyboard is separate to left and right.
Open/disassemble your korg.
Look for connection cable to the left keyboard.
One end is on the keyboard,the other end is at the mainboard.
Unplug both of it, then mounted again.
For master volume,better buy new one.

I think it is time for you to buy one new one....That you can but on side for parts.

1. • 1 Disconnect any accessories, such as GameCube controllers or SD cards.
     
   • 2 Unplug your Nintendo Wii AC adapter from the wall outlet and from the back of your Nintendo Wii. Leave the adapter disconnected for two minutes. Reconnect the adapter to the console and plug the outlet end straight into a wall outlet, not a surge protector.
     
   • 3 Remove the AC adapter from the wall outlet again. If the Wii has yet to turn on, the problem may lie within your electrical outlet. Plug a lamp, nightlight or something electrical into the outlet the AC adapter was connected to. If the outlet appears to work, then you'll have to test the AC adapter itself.
     
   • 4 Run your fingers along the AC adapter cable and visually look for any damage, such as frayed wires or a cracked piece of cable. Also look for the model number "RVL-002" and "Wii" on the adapter. If you don't see the "RVL-002" model number and "Wii" on the adapter, then you are using an unlicensed adapter, which can cause instability and power failure. If the adapter has incurred any damage, you will likely have to buy a new adapter.
     
   • 5 Spray air to clean out the vents on the back of the Nintendo Wii. If your Wii has been sitting for a long time, then dust and dirt may have built up around the vents, preventing the console from cooling itself. If the console cannot cool itself, it overheats and shuts down.
     
   • 6 Click "Start," "Internet Explorer" and visit the Nintendo repair page (see Resources) to open a repair claim. If you tried the above steps and your Wii has yet to power on, your system probably needs professional repair.
     

The following things come to mind: 1. Power cord is loose or marginal connection. 2. Static electrical discharge... can be so subtle you don't even feel it. 3. Internal failure...Maybe even the battery is failing.

Go to the court website, select your product, and download the drivers.

There are many possibilities. One is static discharge... those nasty little sparks when we walk across the rug and get zapped... or we scoot a little in our chair... one''s that you can;t even feel can send electronics into a tailspin.

Another is a possible overheating someplace in the unit. However if it comes back immediately when restarting this is usually not temperature.

Your description of the problem MIGHT indicate a problem with the D-A or digital to analog convertor chip... if so it will require servicing, probably at the factory or having a board swap by a service agent.

1. Remove laptop battery, optical drive, hard drive and ram. Remove external peripherals as well.

2. Make sure AC Adapter is not yet connected to the laptop. Pressand hold on the laptop’s power button for 10 seconds to drain the powerflea.

3. Connect the AC Adapter for laptop to a known good power outlet, check ACAdapter power LED if it is on. Try to sense if AC Adapter is not makinga bit of noise when it is plugin to the wall power outlet.

4. Connect now the AC Adapter tothe laptop. Check if AC Adapter LED stays on when it is connected tothe laptop. If the LED stays on means the AC Adapter is fine. If the ACAdapter LED turned off check the AC Adapter pin that goes to the laptopAC socket if it is loose.

5. If AC Adapter stays on after connecting to the laptop try topower on laptop. If no power LED comes on then this is motherboardproblem.

6. Before replacing the motherboard there is one checking needs todo. If you can open your laptop bottom part then good, do this whenlaptop is not connected to any power source. Try to reseat the laptopCMOS battery then try to power on laptop after, if still fails thenreplace motherboard. I hope this helps.

Its safe to connect your receiver to amplifier's AC socket / outlet. These units has 2 type of AC sockets, Switched and Unswithced. Switched AC outlet can be On-Off by unit itself.
Feel free to ask any more question.