5 Jun
2013
5 Jun
'13
8:31 a.m.
On 06/05/2013 10:41 AM, Jim Brain wrote:
They are far from scarce. I must have a bucket of the 1MB modules
common to the later 286-386-486 machines.
I got to see one... a broken one
and it was a mechanical nightmare but
we replaced the backlight
with LEDs and wired them to DC. The HV supply was also bad on that
one. The result was serviceable.
Hint use a lot of white leds on pcb strips in series as you want a lot
of dispersion over brightness,
a sheet of thin white paper over the LEDs helped disperse the light better.
Allison
How much memory did you end up with in your
286/SLT? There are 3
slots under that aluminum box/cover at the center-front of the
machine with the outer plastic shell removed. Those slots can use any
combination of 1MB and 4MB modules, but those modules are proprietary
and are practically impossible to find today.
I have 2 1MB modules.
Be very, very careful with the LCD in these machines. The backlights
are not well supported and are very easily broken. I'm still on the
hunt for a replacement LCD for one of these that's been sitting in my
project pile for /years/.
I have not opened mine, but is it possible to replace
just the
backlight, or is it a single encapsulated unit?