Amiga 1200 power problems

18 September 2004, 19:57

Hi! I am having problems with the power on my A1200. Now and again whilst I am using it the machine keeps reseting as if there is a power surge.
I have read that the A1200 suffers from power problems if a HD and accellerator is attached.
Does anybody know which is the best A1200 power supply?
The one I have is a heavy brick type. I have removed the HD and accelerator and the machine doesn't have any problems now.

Thanks..

RetroMan · 18 September 2004, 20:04

With HD and accelerator you need at least a 4,5A A500 PSU, but even better a modified PC PSU

18 September 2004, 20:09

Check the power connector on the motherboard. That area might need to be resoldered.

Npl · 18 September 2004, 20:09

If you can get a A500 PSU, use that - its stronger than the A1200 ones. Or you could play save and use an AT or ATX PSU - You can figure out which wire should go where witha Voltmeter or using some shemes of Aminet (hard/hack).

Is your a hd a 2,5 or 3,5 one? in the later case it could be important where you draw your Power from. Maybe the A1200 has too weak internal Powerlines there.

19 September 2004, 17:45

I have a similar problem actually... with my A1200 with ram extension. Once its powed up it works fine, but the HDD struggles to spin up when you first power on. I might see if I can find an A500 PSU from somewhere and give that a go.

fc.studio · 19 September 2004, 18:22

My Commodore A1200 worked for about 4 years with 2,5" HD 1,4GB +
Blizzard 1230IV with 16MB Ram installed (No FPU) using
the original Power supply.
Then I installed a CD-ROM drive 8x taking power from
the motherboard and again (but this time I was Lucky) it worked
for about one years until the power connector/wire suddenly broke
itself.
I ordered (and I suggest you to do) to Vesalia, at cheap price,
a (new) A500 PSU and a new CD-ROM drive (with its internal PSU).

All works fine!

Peanutuk · 19 September 2004, 18:28

I'm using an A1200 with Blizzard 1230 IV [with FPU] and 2.5 drive. I'm using a A500 PSU, there aren't any real problems except that when booting I have to boot and then reset in order to get the HD spinning fast enough to boot. Apart from that all is fine. If you're using a 3.5 HD then that is bound to use more power.

18 September 2004, 19:57	#1
Unregistered Posts: n/a	Amiga 1200 power problems Hi! I am having problems with the power on my A1200. Now and again whilst I am using it the machine keeps reseting as if there is a power surge. I have read that the A1200 suffers from power problems if a HD and accellerator is attached. Does anybody know which is the best A1200 power supply? The one I have is a heavy brick type. I have removed the HD and accelerator and the machine doesn't have any problems now. Thanks..

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18 September 2004, 20:04	#2
RetroMan Registered User Join Date: Aug 2001 Location: Germany Age: 51 Posts: 3,704	With HD and accelerator you need at least a 4,5A A500 PSU, but even better a modified PC PSU

18 September 2004, 20:09	#3
oldpx Posts: n/a	Check the power connector on the motherboard. That area might need to be resoldered.

18 September 2004, 20:09	#4
Npl Registered User Join Date: Aug 2004 Location: Vienna / Austria Age: 45 Posts: 257	If you can get a A500 PSU, use that - its stronger than the A1200 ones. Or you could play save and use an AT or ATX PSU - You can figure out which wire should go where witha Voltmeter or using some shemes of Aminet (hard/hack). Is your a hd a 2,5 or 3,5 one? in the later case it could be important where you draw your Power from. Maybe the A1200 has too weak internal Powerlines there.

19 September 2004, 17:45	#5
T-Bag Posts: n/a	I have a similar problem actually... with my A1200 with ram extension. Once its powed up it works fine, but the HDD struggles to spin up when you first power on. I might see if I can find an A500 PSU from somewhere and give that a go.

19 September 2004, 18:22	#6
fc.studio Cat lover Join Date: May 2004 Location: Italy Age: 54 Posts: 804	My Commodore A1200 worked for about 4 years with 2,5" HD 1,4GB + Blizzard 1230IV with 16MB Ram installed (No FPU) using the original Power supply. Then I installed a CD-ROM drive 8x taking power from the motherboard and again (but this time I was Lucky) it worked for about one years until the power connector/wire suddenly broke itself. I ordered (and I suggest you to do) to Vesalia, at cheap price, a (new) A500 PSU and a new CD-ROM drive (with its internal PSU). All works fine!

19 September 2004, 18:28	#7
Peanutuk Registered User Join Date: Jul 2001 Location: The North, UK Age: 45 Posts: 1,082	I'm using an A1200 with Blizzard 1230 IV [with FPU] and 2.5 drive. I'm using a A500 PSU, there aren't any real problems except that when booting I have to boot and then reset in order to get the HD spinning fast enough to boot. Apart from that all is fine. If you're using a 3.5 HD then that is bound to use more power.

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