LCD Blank USB Unable to Connect

Hi there,

I am using a Lulzbot TAZ workhorse. Yesterday I was cleaning the extruder and the printer turned off all of a sudden. On turning it back on, the LCD won’t turn on even though the power button was lit.

I have checked the continuity through all the fuses I could see, F2, F3 and F4 on the Rambo board and the two fuses at the power socket too. The LCD ribbon cables are also correctly inserted. No visible signs that anything might have fried on Rambo board either.

Kindly guide.