<atfphotography@gmail.com> wrote in message ad97b2ba-305b-46e4-bfdf-808607dd6b4c@t16g2000yqi.googlegroups.com">news:ad97b2ba-305b-46e4-bfdf-808607dd6b4c@t16g2000yqi.googlegroups.com... On Jun 15, 9:11 pm, Polymorph <polymorp...@hotmail.com> wrote:
The other (highly likely) possibility is that the two posts in question are on the same circuit and the mod is in fact the same (just implemented differently). Looking at the photo's, the mask on the PCB seems to suggest that they are on the same circuit. Time to pull out the multimeter methinks. ;-) Cheers, MikeHello,I'll have to take a look. I actually have three Vulcan GS cards so I took photos of all of them and compared.Originally two of them came with dead 20mb drives. Their original ROMs were labeled VUL1.4/GS20. The third card came with a dead 40mb drive and a ROM labeled VUL1.4/GS40.
I have got to have copies of all of the Vulcan ROM binaries. Seeing how I only have the GS/20 ROM in my card, could be the reason I can't get bigger than a 20MB CF card to work on it.
The Vulcan GS card with the 40mb drive does not have the capacitor and is Rev A 3489.The other two Vulcan GS cards that came with the 20mb drives _do_ have the capacitor and are Rev A 4589.Pictures here; http://www.atfphotography.com/vulcan2
Ok, something else I am noticing. The ones with Caps at Pin50 also have the '3B' GAL at position U1, where capless ones have the '3A' GAL.
I thought one of the cards was dead but then I noticed a leaking cap. Time to pull the soldering iron out! I'll re-try the IIe 1.4 ROM Henry sent me and see if I originally tested it in a bad card.
I have a small box full of cards that I need to try cap transplanting with to see if I can resurrect them, as well. "So much to do, so little time". ( Jack Nicholson's JOKER )
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