Have you pulled acroloop cards out and clean slots and gold fingers and re installed?
Printable View
Have you pulled acroloop cards out and clean slots and gold fingers and re installed?
I did have the card cage out last fall to clean the card fingers and replace the CMOS battery. I can’t remember if I cleaned the card slots themselves though. I’ll try that again and reseat everything today. Are there any tests I can run on the card cage components themselves before connecting it to the machine again?
Well, I believe I found the problem. Looks like the -12v trace on the board is corroded to hell from that CMOS battery leak. Probing for continuity from the ATX power header to the -12v pin on the ISA slot showed nothing. Checked the +12v the same way and it was just fine.
So it looks like I'll be searching for another old antiquated 386/486 board or diving into putting my own SBC together.
https://farm2.staticflickr.com/1792/...65f47e04_z.jpg386 board is toast by Michael Hagen, on Flickr
And for comparisons, this is how it looked back in October
https://farm5.staticflickr.com/4464/...9755a58e_z.jpgUntitled by Michael Hagen, on Flickr
Id try and run jumper wires before tossing board. What do you have to lose? Quite a few of my acroloop cards and sim disks have evidence of that
Ron
I did in fact add a jump wire for the -12v trace and I was able to run the mill without a hitch. I should be able to make some chips while I piece together a SBC for this thing after all. Thanks to rl49 for pointing me in the right direction.
My original motherboard was toast for the same reasons. I found a NOS replacement on Ebay for under $100 if I remember correctly and a friend rebuilt the whole pc using a CF card instead of the simdisk and hard drive.
I gave up trying to find ebay boards.
If you are thinking of doing the SBC yourself I would contact Sportybob as my total costs buying the boards new and getting the software upgrades from Milltronics was about the same as getting him to do and he has capabilities to test acroloop cards.
Ron
I can help with an older 386 Motherboard or a SBC update
Call me
952-288-6340
sportybob
Hi Stagen, what about your machine is working now?, i just get one like yours and after some headaches and sleepless now is working but ATC not work Yours is working?, also like your it has a ugly noise from x axis at movement but i think will change rails and linear blocks. originaly like your mine run away at reset and i found is an x axis encoder wire broken now all is working fair good but not ATC. can you share your set up ATC macros?, also i recomend you use an usb floppy emulator i doo and works fine.