It seems that D1691 is damaged. Can I swap it with the second (guess that is for control 5V) ? Mobo boots only with 5V setting.
5V is not so needed in this mobo.
The second question for 919 owners: what transistor model do you have? Maybe can I replace it with other model which may have in damaged boards box.
I think it is one of these NEC D1691 https://cdn.datasheetspdf.com/pdf-down/D/1/6/ … miconductor.pdf
like described here: http://th2chips.freeservers.com/m919/
or your looks more like: https://cdn.datasheetspdf.com/pdf-down/2/S/D/ … 91_SavantIC.pdf
which is same but different manufacture, but could be wrong.
Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun
I found D2583 in slot1 motherboard. After swapping mobo boots in 3V setting.
http://www.amoretro.de/wp-content/uploads/pc- … motherboard.jpg
not clearly visible but it looks like D25X3
