info-mac@uw-beaver (info-mac) (09/01/84)
From: Werner Uhrig <CMP.WERNER@UTEXAS-20.ARPA> has anyone else seen a similar problem or has a hunch what might be wrong? every character echoed back when I type, or any other character displayed by the mainframe, causes the Mac to show 3 horizontal bars of whitish noise, in particular I seem to see a rather thick white line which looks as if it is the beam returning from the right side to the left for the next line. I tried with both versions .15 and .5x and the problem is identical. In addition , a few weeks back I had a similar problem, when I had vertical stripes of snow, simply when connecting a cable to the modem-port. I also don't like the temperature on the left side behind which the analog-board sits. It simply feels hotter than I would like, nothing scientific, just a hunch. I build the cable myself from a joy-stick extension cable, using the pin-connec- tions described in MacTEP, and it tests out ok, as far as I can tell. Anyone have any thoughts on the matter - I'd sure appreciate it. -------