Lovely machine... Does it do anything at power-on. Do you get the Thinkjet 'shuffle'? (The thinkjest printer has its own controller, it's really an HPIL-interfaced device...). If not, then maybe you've not getting the power-OK signal FWIW, the pinout of the power connectoes to the 2 logic boards (same on each board, but not all pins used) is : +5V --o +5V --o Gnd --o Gnd --o +12V--o +15V--o +18V--o -12V--o Gnd --o PwrOK --o Argh!!! The HPCC scheamtics CD-ROM contaisn reverse-engineered schematics for the Integral, but I didn't include the display itself. It's not an HP part, it seemed to be all custom chips. The 2 logic boards, PSU, keyboard, etc _are_ included. If you want this, yoy need to contact Dave Colver (secretary at hpcc.org). That said, I at least have what I think is a pinout for the 20 wire display cable. 1 Gnd --o o-- Gnd V+ --o o-- V+ (>18V) +5V --o o-- Gnd Gnd --o o-- Gnd Rst --o o-- Gnd VSync --o o-- Gnd HSync --o o-- Gnd Dotclk -o o-- Gnd DotsA --o o-- Gnd DotsB --o o--Gnd You should see some activity on the Dotclk, syncs and dots lines. Do you get anything on the display at all? -tony