Date   : Mon, 17 Aug 1992 14:29:20 GMT
From   : welchb@aspen.ulowell.edu
Subject: Amstrad word processor -- groan.

       I had hoped that this message would be a final one of thanks, 
to all the people who had given me various advice about my old Amstrad
word processor; the delay was due to the long time it took to obtain
the proper 3.5 disk drive.
       I hooked things up as instructed, and turned on the switch, only
to get absolutely nothing.  I have taken the beast even further apart than
it was before I tried adding the 2nd drive; still -- nothing.
       The trouble seems to be that the 5 volt output is about 3 volts,
and the 12 volt output is about 5; the 24 volts is ok.  There is no raster;
I suspect there is no high voltage on the CRT (I can't hear it); and the 
voltages there are something I do not like to even get near.
       So, on an outside chance, if anyone has access to the schematic
of the power supply-video board of an Amstrad, I will pay you to make
a copy.  I suspect that the diagram is basically the same for all models;
mine was a PCW8256 (or was it? I took all the stuff home from work).
       Also, maybe someone can answer this question.  In normal operation,
does the CRT require a signal coming back from the computer board before
it starts operating?  If so, can I trick it into operation?  (I am trying
to find out if the high voltage supply of the CRT is what is loading
down the power supply.)
-- 
Brendan Welch, UMass/Lowell, W1LPG,  welchb@woods.ulowell.edu