Samsung S20 Ultra Screen-No display Repair We have received a Samsung S20 Ultra from our client which him had it repaired at an authorized repairer’s right before our handle. It was said its motherboard is damaged and the only way to revive it is to change its motherboard, but it would cost a lot. Our client decided to send his phone to us in the hope of we make it alive with a reasonable price. If the display is the only problem with this Samsung, then to replace its motherboard with a new one surely makes a bad offer. The display circuit refers to the collaboration of the power-supply circuit, the identification circuit, the resetting circuit, the image signal and the interrupt signal, etc. Checking them out is easy, but we still recommend you join our repair which we shall present you as follow.