A.D.A. Amiga Demoscene Archive

I've got a problem to start my big machine.

It's an A 1200 tower 3.1 ROM equipped with:

- Zorro IV expansion board
- Mediator ZIV
- Blizz 68060/50 64MB RAM
- Voodoo 4

On start the PAL monitor shows two slim grey shaded "copperbars" moving top to bottom.
I know about all the regular dignostic screen colours (red,green,blue,yellow) but I never had this.
I suspect some failure on the Zorro board b/c the power supply is running from the Zorro through the
main expansion slot onto the mother board.

When I strip the Miggy naked and put a standard A1200 power pack on those "copperbars" don't appear.

Does anybody have a clue what this indicates ?

OK, the motherboard is all right. So is the accelerator.
It indeed might be the PC/AT power supply (which is rather old).

@d0Dge

try just the motherboard and the accelerator. Have you got other simm modules to try out?

The AT power supply went belly up. Had to order a new ( and stronger) one.
I hope that in the process of breakdown no hardware elements got b0rken.

With the standard A1200 power supply the motherboard, accelerator and a 2.5" HDD worked.
But the crucial hub for my high end system is the ZorroIV board.
Gotta wait for the new power supply to arrive - PC/AT is quite hard to get nowadays.

It's all good again. New strong power supply \o/
The original supply in the EBox Towers was lousy 230W !

d0Dge:

now you can work in more new prods! ;-)

PS: Amigas usually don't need much power but need a lot of power in the +5V lines, 20Amps for +5V is usually enough but the higher the better. +12V will just be used by your HDs and little else.

Not with all the periphery this "beast" has ;)

HDD, CD device, floppy, zorro IV, bilzz 060, repulse sound, Mediator ZIV, Voodoo 4 & Ethernet

I like it how you mention "floppy" and "beast" in the same post. :)
Mine has floppy and ZIP-drive... *rrroar*

Extreme temperatures and other harsh weather conditions can harm hardware components. Any kind of unregulated power supply might harm hardware components. This includes electrical surges caused by lightning or the main power line..