Is there a difference between an A4000 and an ATX Power supply?

[tonyvdb]

Hey,

I have been having troubles with my new Tower setup that I did for my A4000D seen here and I am using a 350watt ATX power supply with the ATX to A4000 power supply adapter. Everything is running great except the Video Toaster Flyer system. I have tried several times folowing the instructions to the letter in doing an "auto hue"  but I get this once it is done. I have done everything right and it worked just fine before when it was still in the desktop.

I have had it auto hue correctly a couple of times but as soon as I reboot the Amiga and restart the T/F it does the same thing.

[tonyvdb]

The picture you see is the output of the toaster to a video monitor not the Amiga video out (that is fine). The genlock seems to also be affected as when I exit the toaster the workbench screen of the toaster video out is all messed up as well.

I heard some time back that the Amigas power supply has some sort of "time tick" that helps in some sort of way.

[tonyvdb]

OK, thanks for the info, I will wait for a responce.

I wonder if this is why its not working properly for me?

[tonyvdb]

Thanks guys I will give this a try.

[tonyvdb]

I have the ATX to A4000 adapter you mention but I was able to beef up the +5 volt wire by adding a second thicker wire to pin 6 and running it to another unused +5v pin on the ATX power adapter. I think I will try to do the CF adjustment later today as I think that may be my trouble as I tried hooking up my old A4000 power supply yesterday and it made no difference so it must be the CF adjustment that needs tunning.

[tonyvdb]

Hmmmm, I did the CF today and it was almost bang on. I hardly had to adjust it at all and it made no difference to how my "autohue" looks after its done. I am just at a loss as if I am persistant it will sometimes work just fine.
Could a poor ground cause this problem? as I only started to have this problem once I moved it to the tower case. But the A4000 works just fine its only the Toaster thats flaky. :-?

[tonyvdb]

Hello Ftamiga,

Yes the MB has a good ground and I have tried with both the original power supply and the ATX and neither seems to make any difference.
I used the a tower that I had from my old P-III and everything fit nicely, a picture is found here.
At first I thought it may have been a lack of the "tick" that the amiga power supply has but that dose not seem to be the problem.