On Sat, Nov 9, 2019 at 1:46 PM Jules Richardson via cctalk < cctalk@classiccmp.org> wrote:
> I've got another /4A however which has a 2-pin plug on the back, and that > one appears to just take plain ol' 110VAC line voltage and the PSU is > completely internal (at least, there's a power cord with it which fits, > but > that one has a few broken keys and so I've never actually done anything > with it). > I'm about 95% certain that it does NOT take line voltage in. It just has a different internal power supply assembly that only uses one of the low-voltage AC inputs from the external power supply instead of both. As far as I've ever heard, there was no 99/4 or 99/4A that did not use an external power supply. If it were mine, I wouldn't even consider pluging it into line voltage until doing a lot more research on exactly what's inside.
