MCU toolboard shutdown

hello everybody. I have a v-core 500 3.1. I'm having a problem that has already made me spend a huge amount of plastic and I can't find the solution. the problem concerns the MCU. It says it has lost connection. I initially changed the USB C cable because it was making bad contact, but it lasted for 3 more prints until the error started again. the machine stops working practically in the same place or with the same approximate printing time any idea what it could be?