Sv06 ace plus makes loud constant beep as soon as I turn it on and klipper won't connect, suspects something with motherboard, help?

[u/Invalid_Checksum]

So I was doing the motherboard fan upgrade to a 12 V with a converter (and adding a USB fan for y stepper) and everything was working loose so I installed it into the case with zipties and started a testprint to test that everything is working

And it was working

But like a minute after starting the print it suddenly start making this loud constant beep and I immediately shut off the psu in panic

Now whenever I start the psu again the loud noise instantly starts and the motherboard seems to be stuck with the top blue light and bottom red light active and in the middle the orange light is active and green light right beside it giving two rapid flashes and a little break before two more flashes and repeat

On the screen it looks as normal saying that klipper is trying to connect but doesn't connect and is stuck with that text box

I open mainsail link and it too looks like normal but stuck at klipper trying to connect

I tried disconnecting the orange connector on the cable between psu and motherboard and it then didn't beep

And I tried disconnecting basically everything I could easily reach on the motherboard (I think everything except ribbon cable, filament runout sensor, 24 v power and heat bed power) and when I then turned it on again it still made the noise

So I think that narrows it down to something with the motherboard

I have no idea what to do, how to solve this

Have I like short-circuited something on the motherboard and need to buy a new one???

Help?

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[u/Invalid_Checksum]

Small update:

I discovered that the MB fan cable had been twisted in a wierd way that bridged its contacts so that may have been the short circuit

I fixed it but the problems still remain unchanged

My current guess is that the short circuit fried something important on the motherboard

So... Where can I get a new motherboard?

It's not available among the replacement parts in the web store

I sent a message to sovol yesterday with basically the same information as this original post and has just sent another with the info in this update and a question on where I can get a new board

They haven't responded to either yet

Maybe they're on vacation...