Wii turns on to black screen and no audio

Hello. My Wii is old as heck but was working fairly well until recently. It turns on to a black screen with no audio. I am getting a source on the TV but there is no response from the Wii. It cannot sync with remotes. It can accept and eject discs still and the all of the lights look normal. I have tried replacing the Bluetooth controller already but that made no difference. There is no visible damage anywhere inside or outside of the machine.

I'm wondering if the Bluetooth controller card I bought may have been DOA or if there is another repair I should try. I have read that this can be a software problem sometimes but there is so much out there to read on these old things.