Amiga.org

Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: fifrelin31 on March 15, 2004, 10:43:27 PM

Title: A500 power supply
Post by: fifrelin31 on March 15, 2004, 10:43:27 PM

Hello everybody,

I've just powered on an A500, but there are no lights on the keyboard.

could someone help me ?

Thanks a lot,
Landry.

Title: Re: A500 power supply
Post by: shIva on March 15, 2004, 10:48:14 PM

first of all, try to measure the voltage of the power connector to see if the psu is dead.
if so, get an other one, else go on (open the old miggy).

Title: Re: A500 power supply
Post by: redrumloa on March 15, 2004, 11:14:46 PM

Yup sounds like a power supply issue. I'd test the voltage out first, as suggested.

Title: Re: A500 power supply
Post by: fifrelin31 on March 16, 2004, 05:01:20 PM

My voltmeter says there is non power !
I've tested the continuity of the wires between power supply and A500 end power supply and plug, It's OK.
I've also tested the fuse inside the power supply unit, and it's OK.

How can I test the power supply's components ?

Where can I find the specifications for the power supply (voltage/amp for each pin) ?

Thanks,
Landry.

Title: Re: A500 power supply
Post by: fifrelin31 on March 17, 2004, 09:55:43 PM

I've made a new alim wiht an ATX PSU and pieces of info found on internet.
The Amiga uses +5v, +12v, -12v and ground. Everything is available on a standard ATX PSU.
You're the king of the bongo !!

To see all the details,

Great info !!!

Thanks aminet also, great site to !!

Title: Re: A500 power supply
Post by: Speelgoedmannetje on March 17, 2004, 10:20:38 PM

@fifrelin31

Careful! Yet the ATX PSU might be disconnected for a long while, there still can be some high voltage electricity on it.