LC/LCII Power Supply Replacements?

[bdurbrow]

OK, now I think it's ready...

 

[LazarusNine]

OK, now I think it's ready...

View attachment 33257

Looking good! That’s a very clean design as well. Thanks for the regular updates. Can’t wait to see how this progresses.

 

[bdurbrow]

I’m going to see if I can get a few more done before sending them off; in the hopes of getting a better deal on shipping. SE & SE/30 as well as whichever variant works with a IIvx (I’d have to go look that up; I think it’s the same one that works with a IIcx & IIci?)

I’m also waiting on some parts from China that shipped the slow route…

 

[LazarusNine]

I’m going to see if I can get a few more done before sending them off; in the hopes of getting a better deal on shipping. SE & SE/30 as well as whichever variant works with a IIvx (I’d have to go look that up; I think it’s the same one that works with a IIcx & IIci?)

I’m also waiting on some parts from China that shipped the slow route…

I think that’s right regarding the IIvx supply. Pretty sure it’s the same as the one that powers the Q700/IIcx/IIci, and a quick internet search appears to confirm that. I even swapped in a 7100 PSU into my Q700 when its PSU died. Prioritising the SE & SE30 + IIcx/ci/vx/Q700 designs seems sensible, given the popularity of the former and the broad capture of multiple machines in designing something for the latter. I am personally most keen on PSU replacements for the Q700/IIci + SE/30 in addition to your LC run, so take that anecdotal data for what it’s worth!

 

[bdurbrow]

Prioritising the SE & SE30 + IIcx/ci/vx/Q700 designs seems sensible

Also, those are what machines I have to test with: one SE; one SE/30 (full machine); one SE/30 logic board with battery damage; one LC; and one IIvx (just arrived).

The others - as of yet - probably don't need PSU replacement: a Gossamer G3; a grey G4 tower (I forget which rev - it's not the mirrored one); an iMac DV, and a 2010 Mac Pro.

 

[BeigeBoxSC]

I'm going to make these in an RoHS compliant manner, so theoretically could ship internationally.

Started laying out the PCB this morning, not sure how long it'll be until completion because kids and life stuff.

I just recapped the PSU in my Performa 400 and it was unsuccessful. I'm looking forward to seeing your new product!

 

[Franklinstein]

I think we have some other power supply threads in the various forums that cover a good bit of these topics, especially in the Hacks & Development section for building replacement devices. Good to see more progress though.

Essentially the following should interchange either directly or with minimum effort:
*Mac 128k/512k/Plus
*Mac SE/SE/30
*Classic/Classic II
*LC 500 series up to LC575 and derivatives (though similar I don't think the 58x models interchange)
*LC/LCII/LCIII/LCIII+/LC475 and derivative models
*IIcx/IIci/IIvx/IIvi/P600/Q700/Q650/PM7100 (though the later models have higher wattage ratings they're downward-compatible with the older models)
*6-slot Mac IIs (same deal-later models may have higher wattage ratings but they're downward-compatible)
*Q800/Q840av/PM8100
*Q610/Q660av/PM6100/various Performas (later models may have higher wattage ratings)
*Q630/PM6200/6300 and derivatives up to but not including the Performa 6360 or other PCI-based models
*PMG3MT/B&W G3/Yikes! G4/AGP G4 all use basically standard ATX power supplies
*GE/DA/QS G4s all use the same special ADC ATX-style power supply though it's trivial to mod these to accept standard ATX if you're not using ADC.

There are others that should interchange (several of the PCI Power Macs such as the 8500 and 9500 for example) but I can't say for sure since they seemed to like changing the harnesses around between models in this era.

 

[Laer]

Any progress on this? I'm looking for a power supply for a IIsi and a IIcx, and would prefer a new one over used.