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Thursday, September 23, 2021

CONTINUITY: HP 9825 Repair Part 12—Onward with the Keyboard, Display, and Printer Board

After replacement of all of its blown-out display chips, further diagnosis of the Keyboard/Display/Printer (KDP) module raises the disturbing possibility that its custom IC controller chip, which now might as well be made of a secret alloy of delirium and pandemonium, was destroyed by the power supply malfunction. Is it dead, or just compromised by further failures in the “glue” logic interfacing it to the rest of the board?

Posted at September 23, 2021 10:41