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Amiga computer related discussion => Amiga Marketplace => Topic started by: broken on June 03, 2008, 10:21:16 PM
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Anyone have an extra PSU from an A500 or 1200 that they would like to sell?
Or even just the cord that goes from the PSU to the back of an Amiga?
I can just build myself as PSU from AT or ATX power supply.
edit: Thanks all, found one!
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Have two somewhere (in theory)..only able to locate one right now...no idea how much it'd cost to get it to ya from California tho'
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You can order an Amiga 500 psu from 4 Jays Video for $18 plus shipping. Their website is moving from a .com to a .net but the Amiga equipment list is here. (http://www.4jays.com/amiga.html)
I've done a lot of business with the store...good folks!
Bob
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broken wrote:
Anyone have an extra PSU from an A500 or 1200 that they would like to sell?
Or even just the cord that goes from the PSU to the back of an Amiga?
I can just build myself as PSU from AT or ATX power supply.
Please don't destroy a working A500/A1200 Power Supply - The French Amiga Repair Center has the ends necessary to make adapters available for around $5. They shipped me one quickly and I built an ATX to A500/A1200 adapter with it and some inexpensive wire.
I wrapped it all up in the plastic sheath from a large power cable and electrical taped it together. It looks decent for 30 minutes work.
-Nyle
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Agreed. The French Amiga Repair Center (http://www.amigacenter.com/Homer.html) is great and you can find the connectors here (http://www.psydunet.fr/Chips_E_grp_8-1.html) for €4.
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Nlandas wrote:
Please don't destroy a working A500/A1200 Power Supply - The French Amiga Repair Center has the ends necessary to make adapters available for around $5. They shipped me one quickly and I built an ATX to A500/A1200 adapter with it and some inexpensive wire.
I wrapped it all up in the plastic sheath from a large power cable and electrical taped it together. It looks decent for 30 minutes work.
-Nyle
No, no. I meant to imply maybe pulling the cable from a dead psu.
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I need to order one to make me a PS from an ATX PS. Anyone have a good guide?
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Nlandas wrote:
Please don't destroy a working A500/A1200 Power Supply - The French Amiga Repair Center has the ends necessary to make adapters available for around $5. They shipped me one quickly and I built an ATX to A500/A1200 adapter with it and some inexpensive wire.
I wrapped it all up in the plastic sheath from a large power cable and electrical taped it together. It looks decent for 30 minutes work.
Is there a site that shows the wiring diagram for this? How do you fool an atx power supply into thinking there's a motherboard there?
brian
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blanning wrote:
Is there a site that shows the wiring diagram for this? How do you fool an atx power supply into thinking there's a motherboard there?
brian
here! (http://www.ianstedman.co.uk/Amiga/amiga_hacks/Amiga_Power_supplies/amiga_power_supplies.html) :-)
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blanning wrote:
Nlandas wrote:
Please don't destroy a working A500/A1200 Power Supply - The French Amiga Repair Center has the ends necessary to make adapters available for around 5. They shipped me one quickly and I built an ATX to A500/A1200 adapter with it and some inexpensive wire.
Is there a site that shows the wiring diagram for this? How do you fool an atx power supply into thinking there's a motherboard there?
RKauser beat me to it - Here's the quick guide.
Tools - Soldering Iron/solder, Good guage wire, A500/A1200 power connector, volt meter, electrical tape and possible cable wrap or something else to sheath the wires.
(I used an ATX-20 to ATX-24 adapter and cut off the ATX-24 end and used the cables from the ATX-20 end. You can just cut the wires coming out of the PS.)
1.) Open the connector to expose the solder points.
2.) Double and triple check the guide (http://www.ianstedman.co.uk/Amiga/amiga_hacks/Amiga_Power_supplies/amiga_power_supplies.html) to get the correct wire map down.
3.) Strip the wires on both ends of the wire. (Twist well together if they aren't solid core.
4.) Solder the wires to the correct pins of the A500/A1200 connector using the supplied guide. (Double check the connection.)
I found it helpful at this point to write down a quick little color code chart for my wires. You know like red goes to +5V, Yellow to +12, etc. Depends on the color of the wires you were able to acquire. You might also mark them with tape.
4 1/2.) You may need to install your wire sheath at this point unless you use wire wrap or some other kind of split cover.
5.) Now using the guide locate the ATX wires that offer the correct voltage output and use a volt meter to confirm. Cut these wires loose and strip.
6.) Tin the leads and join the correct ATX wires to your cable wires.
7.) Double check continuity on your cable using the volt meter and make sure the pins go where you think.
8.) Now you need to make the ATX power supply turn on. With most of them you can simply hard wire PS-ON(Green I think) to GND(black). The PS needs to have a load on it but the A1200 should be enough. The guide has a circuit for some stuborn PSs that won't turn on.
9.) Now test you cable and make sure the correct voltages are coming out the correct pins. (Triple check and wiggle the ends)
10.) Assemble it all together in the manner that you've decided.
11.) Test it with your A500/A1200.
The advantage of using the ATX-20 to ATX-24 pin adapter is that you end up with a cable that can be moved from ATX PS to ATX PS, so that if your PS dies you can just use another one.
You also end up with many cables left over that would actually allow you to add additional A500/A1200 ends and power multiple units. ;^)
I hope this helps get you started. I know it's not as detailed as it could be. -Nyle
EDIT: I'd show a picture of my adapter cable but my skin isn't think enough today to deal with the multiple critics here who'd tell me I could have done it better.
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Thanks. I have a bid on an a500 power supply on ebay. If the price goes too high, I'll make the connector. I have a dead atx motherboard and matching power supply. Maybe I can desolder the atx connector and make a little circuit board. I also found a post with a link to this place in france selling the square amiga power connectors.
brian
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Your better off just modding an ATX psu to use on your miggy, i have recently done this and now my amiga 1200 has all the power i could ever need 400watts to be precise
Its not that hard to do if you have some basic electrical knowledge
Good luck mate
Miggy1974
Amiga, keep the faith