15 Nov
2019
15 Nov
'19
1:20 p.m.
On 11/15/19 7:46 AM, Jules Richardson via cctalk wrote:
On 11/14/19 3:02 PM, Jules Richardson via cctalk
wrote:
OK, the cord "fits", but having looked at it now I'm not at all
convinced, either. The two-pin socket is actually the same as the
four-pin socket on the other two machines, but with the upper two pins
(intentionally) missing.
The PSU board inside appears to be a switcher, but I'd be inclined to
agree with Allison that it's intended to run from low-voltage AC (I've
put the machine back together now, but just realized that I should have
checked the voltage rating on the rectifier stage's caps).
Your inclined to agree, seriously.
I have at least one of every model and have run them periodically for
the games, refresh the media (tape and disks) and also because its
collection. I have all the available documents including user and
service manuals. I've even gone as far as to make a hybrid high
speed system with 16bit wide memory. When you have excess a few
hacked for fun. FOor those that gasp and clutch their chest I use
the black model as they are common as house flies. The base early
99/4 and the late beige model are uncommon.
That and ratshack used to sell the switcher, transformer, keyboard
after TI quit and parted out their stock. I have a few of all.
Allison
I'm
about 95% certain that it does NOT take line voltage in.
Hmm, I'll see if I can find a moment to take it apart later. It's
interesting that it's a boxed unit with a cord that fits - but then it
does have three broken keys (caps are kicking around in the box) so
it's entirely possible that someone just parked it there for storage.