How do I check if the Nexus 4 motherboard is still good?

Adfor

New member
Nov 4, 2014
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how to check if the nexus 4 motherboard is still good?

My nexus 4 is lcd is blacked out but is powered ON. i can feel touch screen working because of the swiping sounds. I read blogs which mention that it will need a new screen. But before I do that, how can I make sure that there is nothing wrong with the motherboard. I do not want to invest in new screen and later realize that it was the motherboard creating the issue?