Can I Fix my mac mini m2?

I bought a broken mac mini m2 for trash price. It seems the power went out whilst I was updating. It turns on, but the screen doesn’t come up and the light on it is constantly flashing red. I have a second Mac device; when I try to enter Recovery Mode using that, I put my Mac mini into DFU mode, but during the installation process I get the error: ‘Unexpected device state: “DFU” expected “RestoreOS” (Probably forced into DFU mode externally)’. When I took it to a Mac repair shop, they said there was a motherboard fault caused by the power cut. Can I repair this myself?