Congratulations! Impressive dedication. Got any plans on how to use it now when it's resurrected and kicking ?
Ujeen wrote on 2024-12-05, 02:29:Congratulations! Impressive dedication. Got any plans on how to use it now when it's resurrected and kicking ?
I've been designing some things for that, something like an exhibition.
Something like a wall mount with complete representative systems of 286, 386, 486 and Pentium/K6 (maybe and XT clone too), the best I can put together in each case, and only the internal components, so they can be seen. And to which I can connect a keyboard, mouse and display (or use a switch) and use, with software from each era.
Also a "portable" structure where you can do something similar but that can be transported to events and exhibitions.
The problem for now is that I only have one working ISA video card (looking for more, meanwhile Im restoring a CGA), and the 286 I have is a PS/2 Model 50 that I'm restoring (it was damaged by its neophyte ex-owner) and that I obviously won't use like that.
kinetix wrote on 2024-12-04, 20:56:Replacement of the destroyed part of the 10K array with discrete resistors, , . I had to do it this way because I don't have one […]
Replacement of the destroyed part of the 10K array with discrete resistors, , . I had to do it this way because I don't have one of this value with this amount of resistors.
I do have a full replacement for the 4.7k array, and I will change it later. meanwhile the destroyed part goes with that small array.
I did those fixes on the bottom side, so that they are not visible.
Now Im changing some of the wires I used for the broken or missing traces.
Good plan that, I always find resistor arrays a complete bastard, because they are seldom marked very clearly as to what they actually are, either in value, tolerance, or whether they are the parallel type like that or one of the multiple series ones. Then even if you do know, finding one to match is an equal pain in the arse.
Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.
BitWrangler wrote on 2024-12-05, 04:04:kinetix wrote on 2024-12-04, 20:56:Replacement of the destroyed part of the 10K array with discrete resistors, , . I had to do it this way because I don't have one […]
Replacement of the destroyed part of the 10K array with discrete resistors, , . I had to do it this way because I don't have one of this value with this amount of resistors.
I do have a full replacement for the 4.7k array, and I will change it later. meanwhile the destroyed part goes with that small array.
I did those fixes on the bottom side, so that they are not visible.
Now Im changing some of the wires I used for the broken or missing traces.Good plan that, I always find resistor arrays a complete bastard, because they are seldom marked very clearly as to what they actually are, either in value, tolerance, or whether they are the parallel type like that or one of the multiple series ones. Then even if you do know, finding one to match is an equal pain in the arse.
These were easy. Just by measuring them you could tell what they were like inside. but even better, in the chipset manual there are the typical schematics of how to use it, basically the schematics of this motherboard and other similar ones, and there you can see what each array looks like and how it is used. in fact, this schematic helped me realize that the 4.7k array was broken, while reviewing everything that had to do with memory because the POST codes indicated a failure in the initial analysis of the RAM. and that 4.7k is one of those that do pullup on the data lines (D14-D22). and being next to a crushed one made it suspicious. the crack was basically invisible, and trying to measure all the components that I could, and that I could replace, was perhaps too much work and likely to not find the problem.
