Bricked Wii

Well...
My Wii was bricked, no signal on tv at all...
I've bought a new motherboard for Wii, installed it yesterday...
But when i turn the Wii on, I only get a black screen (no more 'no signal' problem)
The green light goes on, disk drive light blinks blue, but does not stay on, still makes noise
Could it be the wi-fi module or bluetooth?
Thanks in advance

If you can't turn on the wii with the wiimote, it is the bluetooth module, otherwise it isn't.

The disc drive light blinking means that you have Bootmii installed as boot2. Get the Bootmii SD card folder and put it on the root of your SD card and put the card in your wii. As long as the SD card is supported by Bootmii, Bootmii will load when you turn on the wii. Make a NAND dump with Bootmii so that you can get your wii's keys. Use Betwiin with these keys to convert a NAND dump from another wii to work on your wii. Finally, use Bootmii to restore this NAND dump. If all goes well, this will fix your wii.