Commodore Amiga 2000 PSU Upgrade
Commodore Amiga 2000 PSU Upgrade.
I have replaced the PCB of the Commodore Amiga 2000 power supply because tired and died after many years of use and there was not the slightest sense of the repair.
The difficulty to the present day is finding a power supply ATX v1.0 with -5v (white wire) in the later versions of ATX PSU was removed, the Amiga 2000 uses this voltage for the ZORRO cards.
*UPDATE*
If you have trouble to finding an ATX power supply with the -5v output (white wire on the connector) you could use a voltage regulator LM 7905 to adjust the voltage from -12v (available in all ATX power supplies also of the latest generation) to -5v.
Due to the missing TICK signal you need to move the jumper J300 to the position 2-3 and if you have an Amiga 2000 REV4x you need to move the jumper J34 to the position 2-3.
Below the work was done.
Gallery:
source: John “Chucky” Hertell Blog
Could you please provide any schematics of your work?
@David
Hi,
..for the Schematics you can check here: http://wordpress.hertell.nu/?p=282
ciao,bel lavoro…volevo chiederle dove ha attaccato il filo marrone del connettore amiga..e se possibile foto più dettagliate grazie
@paolo
Il filo marrone (nero) e’ il TICK signal e non va collegato. Bisogna pero’ ponticellare sulla motherboard dell’AMIGA 2000 il jumper J300 o J34, come spiegato nel post altrimenti NON funziona.
Alimentatore modulare Atx 1200W Real Plus 220-P2-1200-X0 Evga
https://tecseteletronica.loja2.com.br/8752692-Fonte-Atx-Modular-1200W-Real-Plus-220-P2-1200-X0-Evga
Hi!
Sorry – where is jumper J34 on the Rev 4.X board?