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klx300r
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need help my A4000 won't start with new A4000 ATX PSU adapter Posted on 20-Jul-2019 4:43:33
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Elite Member |
Joined: 4-Mar-2008 Posts: 3836
From: Toronto, Canada | | |
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klx300r
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Re: need help my A4000 won't start with new A4000 ATX PSU adapter Posted on 11-Aug-2019 5:11:55
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Elite Member |
Joined: 4-Mar-2008 Posts: 3836
From: Toronto, Canada | | |
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| Update:
got around to try a full sized ATX PSU tonight and readings as follows when not connected to anything again:
Grey -+5.11v Blue--11.52v Yellow-+ 12.21v Red-+5.11v
and yet again like the micro-ATX PSU my A4000 won't boot up at all. Tried attaching an old 'real' hard drive to see if some extra load draw would kick it up but same thing.
_________________ ____________________________ c64-2sids, A1000, A1200T-060@50(finally working!),A4000-CSMKIII ! My Master Miggies- Amiga 1000 & AmigaOne X1000 ! mancave-ramblings X1000 I BELIEVE |
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Geri
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Re: need help my A4000 won't start with new A4000 ATX PSU adapter Posted on 11-Aug-2019 10:59:17
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Elite Member |
Joined: 7-Oct-2003 Posts: 2038
From: ST/AT | | |
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| @klx300r
What ATX power supply do you use resp. what's its power rating for the outputs?
Over on a1k.org Matze developed a more sophisticated ATX power supply adapter for classic Amigas that can also put some load on the 12V line as modern ATX power supplies seem to expect most load on this line (because of the CPU voltage regulators connected to 12V - contrary to Amigas, which have most load on the 5V line). _________________ A1SE: G3@600MHz, 2GB, 1GBit network card A1XE: G4@933MHz, 2GB, refitted AC'97 codec microA1: G3@800MHz, 1GB
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OneTimer1
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Re: need help my A4000 won't start with new A4000 ATX PSU adapter Posted on 11-Aug-2019 18:11:58
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