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[orb85750]

My brother plugged in an external floppy to his A2000 while the machine was on. Now the computer doesn't boot at all. It powers on fine, but he gets only a black screen. What component(s) is most likely fried?

[CSixx]

I've shorted mine out quite a few times on the floppy, the serial port, etc... Same result, black screen. As unlikely as it sounds, i leave it off for a day then turn it on and it magically works again.

But maybe I've just been lucky.

[orb85750]

It happened a few days ago. We tried that by default. The magic didn't work for us. :-(

[drwho]

That could be the 5v rail on the power supply.

If you want, you can test this with a cheap meter on the red (+5v) of one of the large, white "molex" power connectors.

Hope this helps,
Mike

[actung_bab]

yes did the same thing with my amiga 4000 just after worked on it for year getting parts putting it together aggg i was pluging in internal floppy sitched it on a made a arching sound , and result is the same . am hoping it power supply as well , but got wait
to amiga guy here in nz back from south pole end the year aghhhh been like year already

[spaceman88]

Originally Posted by orb85750

My brother plugged in an external floppy to his A2000 while the machine was on. Now the computer doesn't boot at all. It powers on fine, but he gets only a black screen. What component(s) is most likely fried?

Try swapping the CIA chips. I burnt one out by plugging my monitor into the serial port ( yes I know!! :-). If you get a different problem you can order a replacement.