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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: gateres on January 16, 2014, 02:56:15 AM
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Any chance anyone has any idea where to get an alternate power supply for the 3000T? I can't seem to track down an original replacement.
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IIRC, the 3000 power supply was normal (5 and 12 VDC rails) except for an additional 60Hz signal to the motherboard for video purposes? I could be wrong.
Have you searched Aminet and the web for plans to modify a PC power supply?
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AmigaKit sells adapters for ATX -> A2000, A3000, A4000, etc. Their adapters are reasonable-priced and include a power on/off switch. Have you checked if any of them might be compatible with the 3000T?
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IIRC, the 3000 power supply was normal (5 and 12 VDC rails) except for an additional 60Hz signal to the motherboard for video purposes? I could be wrong.
Have you searched Aminet and the web for plans to modify a PC power supply?
Pin 3 on the 3000T PSU is -5V. I think that line was removed many years ago on ATX PSU's so a voltage regulator is needed. Or maybe the 3000 machiens work without the -5 volt signal?
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I believe it used an AT power supply which are still available new up to 400W. The pin out is on the web and if it uses a nonstandard connector, one can splice that onto the AT one.
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The A3000T motherboard has an ATX- type connector BUT IT'S NOT COMPATIBLE WITH MODERN ATX POWER SUPPLIES, the pinout differs.
I built my own adapter for my lone 3000T motherboard (see the thread here (http://www.amiga.org/forums/showthread.php?p=754189#post754189)) with a regulator for the missing -5V line. Not an easy build, though.
Regarding your other threads about the 3000T of yours, the keylock is not required to boot. It has key+mouse lock and reset but you don't need to have those connected for booting.