So, to explain myself here, I want to take an ATX power supply and among some other modifications, mod it so that one of the pins on the 24 pin connector outputs +25v while on standby and powered up. Is this going to be an uphill struggle or would it be fairly straightforward?
The reason for me wanting to do this is because I have a PowerMac G4 (or to be more specific, a 2003 Mirror Drive Door) with an Cinema HD Display plugged into it's ADC port - these monitors don't have a separate PSU, they are instead powered through the ADC connector by the Mac. Thing is, these Macs are notorious for having PSU issues and failures and it seems mine has developed such an issue with its PSU. It does still work, but recently it just doesn't like driving the Apple Cinema HD Display I have plugged into it and won't turn on when it's plugged in. I have to fiddle around to get it to work with the monitor plugged in.
I figure if the PSU is on the way out it's only a matter of time before it dies completely anyway (it is afterall around 13 years old) so I'd like to replace the PSU. However replacement PSU's for these Macs are usually ridiculously expensive and it's cheaper by a long way to do an ATX conversion, and it's actually fairly straight forward to do an ATX conversion so it works in one of these Macs. The only problem with that is of course doing so means I'll lose the 25v power to the ADC connector rendering my monitor useless, hence my question here. It doesn't look like anyone else that's done an ATX conversion for their Mac has ventured down this avenue, or at least I can't find anything when Googling it.
I'm hopeful that isn't because it's not possible to do.
The reason for me wanting to do this is because I have a PowerMac G4 (or to be more specific, a 2003 Mirror Drive Door) with an Cinema HD Display plugged into it's ADC port - these monitors don't have a separate PSU, they are instead powered through the ADC connector by the Mac. Thing is, these Macs are notorious for having PSU issues and failures and it seems mine has developed such an issue with its PSU. It does still work, but recently it just doesn't like driving the Apple Cinema HD Display I have plugged into it and won't turn on when it's plugged in. I have to fiddle around to get it to work with the monitor plugged in.
I figure if the PSU is on the way out it's only a matter of time before it dies completely anyway (it is afterall around 13 years old) so I'd like to replace the PSU. However replacement PSU's for these Macs are usually ridiculously expensive and it's cheaper by a long way to do an ATX conversion, and it's actually fairly straight forward to do an ATX conversion so it works in one of these Macs. The only problem with that is of course doing so means I'll lose the 25v power to the ADC connector rendering my monitor useless, hence my question here. It doesn't look like anyone else that's done an ATX conversion for their Mac has ventured down this avenue, or at least I can't find anything when Googling it.
I'm hopeful that isn't because it's not possible to do.
Comment