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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: bjjones37 on December 10, 2013, 02:01:29 PM

Title: Amiga 4000 power supply
Post by: bjjones37 on December 10, 2013, 02:01:29 PM

I was taking another look at my broken A4000 and decided to check power supply voltages.  It is currently putting out 4.45v, 10.32v and -10.67v.  Is this adequate to power my A4000 or are the voltages too weak?  I am getting that rhythmically flashing green screen.

Title: Re: Amiga 4000 power supply
Post by: Amiwest on December 10, 2013, 05:31:08 PM

Power supplies can measure different voltages with different cards but the measured looks bad.
http://amigakit.leamancomputing.com/catalog/index.php?cPath=42?¤cy=USD
has adapters.
http://www.ianstedman.co.uk/Amiga/amiga_hacks/Amiga_Power_supplies/amiga_power_supplies.html
Has good info on Amiga power supplies.

Title: Re: Amiga 4000 power supply
Post by: bjjones37 on December 10, 2013, 08:01:24 PM

I took these measurements with nothing in the case except the motherboard and power supply. I wanted just enough load on the power supply for it to power up.