NEXCOM NPT 1550 - Manual (Page 13)

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3-3 Replace the Inverter Board & Touch Board:
3-3-1 Replace the Inverter Board
a. The location of Inverter board on the LCD sheet metal bracket.
b. Unfasten the screws (x2).
c. Disconnect the cables (x3).
3-3-2 Replace the Touch Board:
a. The location of touch board on the LCD sheet metal bracket.
b. Unfasten the screws (x2).
c. Disconnect the cables (x2).