Our T80 does similar.
When I powered on, no signs of life from the computer. No beeps. No text on screen.
The screen works, but it doesn’t display anything.
If I have the mix rack turned on, the sound will work, but with no controls–No volume control, no mute/unmute. So whatever is there is there and that’s it.
Taking the back off was really easy–mostly just a bunch of phillips head screws. There are a couple torx bit screws, and you will need to unplug two wires coming from the jack in the middle of the back.
I replaced the battery (looks like a nickle) and now when I power it on it beeps! Great Success!!
I connected a monitor and keyboard via VGA and USB. It shows the black and white ‘BIOS’ window, but that just tells me it can’t find a network.
I followed the “network reset procedure” to reset the network settings for the mixrack and board. But that didn’t do anything…
The sales rep told us to take a pic of the SBC (I think that’s the main computer or processor or CPU or whatever. It’s easy to ID, though. It’s just the board the battery is connected to).
If we end up replacing that board, it’s like $1,500 which seems like ‘ouch’ but way better than $5-10k for a new board.
I’ll try to update this post when something else happens.
Let me know your progress!
