+XLERB Posted March 12 Share Posted March 12 Hi all: I have a PEB with a fried power supply board (Diodes at least are shot, judging by the fireworks). I’ve been seeing and hearing that it’s possible to replace the big transformer and the PSU board with an ATX power supply, with the Mean Well PT-45 power supply mentioned several times. I’ve been scouring the threads (including Shift838’s massive tower project, which is far beyond my capabilities), looking for more information. I’ve also seen references in a couple threads to Tim Tesch’s way of connecting an ATX power supply, but can’t locate anything on that (apologies that I don’t know Tim’s handle on here). It seems (and I’ve gotten indications from Arcadeshopper) that the ATX voltages (+5v, +12v, and -5v, rather than TI’s 18v and 8v) can be used with TI peripheral cards and most others (except the HRD) without modifying the cards, since the cards will still handle the lower voltage OK. There was some controversy in this thread, but the prevailing opinion seemed to be that it can be done. But I haven’t been able to find any details about how this might be done, especially by someone who has done it. I’m pretty handy with a soldering iron and making physical modifications to devices, but my circuit knowledge is pretty rudimentary. Can anyone steer me to some more detailed directions, or even a schematic (beyond the PEB schematic)? I’d like to have a backup (that won’t damage my precious cards) so I won’t have to go back on eBay (and add another broken PEB to the growing pile in my basement) when something goes wrong - and I figure this may be of use to the community as working PEBs dwindle in the wild… Thanks! 2 Quote Link to comment Share on other sites More sharing options...
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