Blizzard 1230/50 MKIV problem (Black Screen)

[EnyGmaTiK]

(I posted earlier on another thread but i thought i could get more expose creating a new one)

I bought this accelerator off e-bay, but when i plug it to my A1200, i get a black screen and nothing more...

What could cause this?

PSU not delivering enough power?
Dead Blizzard?  :-(

[EnyGmaTiK]

Thanks. The PSU is from a stock A600.

I've searched the forum and i came up with this:

-Black
Opening screen
Initial Hardware tests passed
Initial system software tests passed
Final initialisation test passed

 :-?

[EnyGmaTiK]

As i'm trying now without any SIMM (to narrow down the problem) it's not a incompatibility with the SIMM...

As for the card may not be properly plugged in... i've pressed the card until it ' clicked ' on the port, so it must be right...

Any ideas?

[EnyGmaTiK]

amiga1260 wrote:
Try this:

Take the card out and the put it your expansion port. Now the machine should boot up. I had this problem once.

Could you explained it better?
Take the card out, and put it back again?

[EnyGmaTiK]

Yes I do  :-D .

Tried no luck.

[EnyGmaTiK]

Yes I do  :-D .

Tried no luck.

[EnyGmaTiK]

Yes, i'm sure it's the 1230IV ( is stated on the board itself) and you're right is 1230/50... my bad :-D

When i power on the Powerled lights up, and stays on, it does not blink.

As for the PSU being not strong enough i tried earlier powering up the miggy with only the Bliz, i removed the FD and HDD... and no luck... same black screen.
I don't know if this is prove that the PSU is powerfull enough for the Blizz, but i hope it isn't... and that i just need a new powerfull PSU.

P.S. My PSU is 20w

[EnyGmaTiK]

I was wrong, it's indeed 25W ( i don't know where i've seen 20W  :-P )

230~240V ~ 300mA 50Hz

Output:

+5v ~ 3.0A
+12v ~ 500mA
-12v ~ 100mA

That is the specs of the PSU

[EnyGmaTiK]

I was wrong, it's indeed 25W ( i don't know where i've seen 20W  :-P )

230~240V ~ 300mA 50Hz

Output:

+5v ~ 3.0A
+12v ~ 500mA
-12v ~ 100mA

That is the specs of the PSU

[EnyGmaTiK]

Brian wrote:
Get hold of an old AT trafo. On the motherboard powerplug connect orange (PowerGood) to yellow (+12v), then connect one of the diskdrive power connectors to the diskdrive and another one to the motherboard.

Can you explain this bit better?

[EnyGmaTiK]

Brian wrote:
Get hold of an old AT trafo. On the motherboard powerplug connect orange (PowerGood) to yellow (+12v), then connect one of the diskdrive power connectors to the diskdrive and another one to the motherboard.

Can you explain this bit better?

[EnyGmaTiK]

I sucessfully modified an AT PSU, but the problem persists... black screen  :-(

[EnyGmaTiK]

I can't reach other A1200... As for the board being dead... hope not  :-(

[EnyGmaTiK]

I think at this point i've tried everything...

I think i've got a dead blizzard...  :-(

[EnyGmaTiK]

I think at this point i've tried everything...

I think i've got a dead blizzard...  :-(