I would replace the electrolytic capacitors in the power supply before going further.
Sent from my iPhone > On Oct 25, 2015, at 15:38, Toby Thain <t...@telegraphics.com.au> wrote: > >> On 2015-10-25 5:28 PM, Toby Thain wrote: >> Hi, >> >> After a few years I wanted to try my Cube with the soundbox/VGA splitter >> configuration for the first time. (I have the fading phosphor N4000A so >> have been keen to have an alternate video solution.) >> >> However, all is not well. Using the keyboard power button, the machine >> powers on for a couple of seconds, just long enough to see a NeXT logo >> and grey desktop on the VGA (yay!) but then powers itself off again. > > > I did the obvious thing and tested it with a standard monitor and cable and > everything is okay. So the problem must exist with the splitter/soundbox > setup. Soft power signals? > > Any suggestions welcome. > > --Toby > >> Any clues? >> >> Thanks in advance >> >> --Toby >> (not having a good classic computing week) >
