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Problem with motherboard .(?)

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I have a 12-18 month old Ender 3 Pro.  While working on some changes, I accidentally shorted out the bottom of the BTT SKR mini.  The screen went blank but still lit.  I ordered and received a replacement BTT motherboard and hooked it up. Lights came on but the screen remained blank.  

Question #1: should I order a new screen or might there be a way to determine if that’s the problem (as opposed to the replacement being defective). I see no damage to the BTT  or the LCD screen.  When powered up, lights on the BTT light and the screen backlight is on but no output

Question #2:  if I do buy a screen, does anyone have a suggestion as too were I might get it from?  I’m in the US if that makes a difference.  

Charlie