Wii powers on. screen stays black.

have you check the input on your tv , make sure you are at the right input , also check you cables , these cables sometimes come loose

This needs to be professionally repaired.
The problem is in the systems video card
There are only a few people that can do the process properly and fix the system permanently.
the wii console is probably the most complex system to take apart and put back together properly without damaging anything internally due to the small nature of the unit.
if you need help getting this unit fixed please feel free to contact me
[email protected]

Power light is green or orange - TV screen is blank

If the power light is green or orange and your screen remains blank, follow these steps.

1. Completely power down your system by pressing the power button for 10 seconds. If that doesn't work, unplug the AC Adapter from the Wii for a moment, then plug it back in.
2. Make sure your Wii console has the most current Wii system menu. Download the latest update (how to), and then test your Wii console to determine if the problem has been resolved.
If you continue to experience this issue, there is a problem with the Wii console and it will need to be repaired.

you are getting Black screen While using your nintendo wii and nothing else Right .................
if so then dont worry you can fix this easily with the help of repair guide available in net ....... you can download it and solve your problem its a big process but if you do correctly according to the guide then you can fix this....... All the best
Click Here to download guide

Try replacing the cords. I don't have a Wii but tHIS WORKED FOR MY ps2

Hi.If the power light is green or orange and your screen remains blank, follow these steps.

1. Completely power down your system by pressing the power button for 10 seconds. If that doesn't work, unplug the AC Adapter from the Wii for a moment, then plug it back in.

2. Make sure your Wii console has the most current Wii system menu. Download the latest update, and then test your Wii console to determine if the problem has been resolved. If you continue to experience this issue, there is a problem with the Wii console and it will need to be repaired by a certified Nintendo service tech.


SYSTEM UPDATE

If your Wii console is currently connected on-line, you can download the latest Wii System Update by selecting the "Wii System Update" button from Wii System Settings menu. Downloading the latest Wii System Update will add the most current features to your Wii console. If you already have the latest update, on-screen messaging will indicate so after the Wii console searches the available Wii System Updates.

as a manufactuer of the wii console the internal scart funtion may be damaged due to, to much use of the console. Basically not being able to be used

If Wii gives Disc Read Error, first step you need to check is totry another disc or clean the exisitng disc. This will confirm that problem is with either Wii or Disc. If the console itself is giving disc read error then it needs to be repaired. You may check out DIY Wii Fix Guide,that will show step by step information to fix the problem yourself. It also gives information on fixing many Wii Related Problems, so its a kind of Wii Problems Reference Fix Guide


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Go to the tv settings and check to see if you blocked any incoming devises. If you did block the devides, your tv will not read the wii

I found this [temporary] solution at http://www.wiierror.com/wii-black-screen.php:

(via email, thanks Steven) This happened to me once, but I fixed it. Here is how:
Eject the disk
Unplug the wii at the back
Wait 1 minute
Plug it back in
Turn it on from the remote
Press reset if it does not show up
Hold the power button to shut it off
Turn it on once more.
I don't know how, but it seemed to work for me. The problem happened when I was trying to load the Mii channel. Hope this helps !

(via email, thanks Andrew)
The first time I shut down my Wii, the light went orange (as it should). When I turned on the power with my wii remote the next day, the wii\'s light turned green but the screen was black.
The treatment was the same as from Black Screen, No Connection: Unplug the Wii\'s power supply unit, then replug; turn system on with wii remote.
The difference is: this problem can strike in more places than just by loading the Mii Channel. Also, I think the green light being on (yet there being a black screen) is a common symptom as well.