A3000T Problem. Power On. Flashing Yellow Screen HELP

[nyteschayde]

I have acquired an A3000T. Upon power up it displays a flashing yellow screen. Does anybody know how to fix it? If your still up please let me know.

[nyteschayde]

I've removed all accelerators, video cards, etc... and still same problem. The board is completely stock. Any ideas would be great.

[blobrana]

A tricky one that...
It`s the cpu...680x0 error...http://mysite.freeserve.com/blobrana/database/startup.html

 :-?

[nyteschayde]

The LED flashes several times. Do you have any ideas on how to help me diagnose this problem? I think around 8 times. Its very fast so its hard to guage.

[Madgun68]

I'd start by pushing down on all the socketed chips to make sure they haven't worked up. If this fails, I'd start looking at the ram.

[trgse]

first what is your hardware cpu cards etc.

I had a similar problem and I fixed it by cleaning the cpu connector and reinserting the cpu card.

[blobrana]

@Madgun68  ...Good idea.


here is a site with some pictures to tell you what things are...http://www.amiga-hardware.com/a3000plus.html

Too many flashes...multiple problems...?

[nyteschayde]

I've checked the pins and chips. I even have an A3000D and have begun swapping various chips with the same part numbers to see what is defective. Not sure what I should change and what I shouldn't.

The accelerator card is a PP&S 040 card running at 28MHz. It worked fine in the A3000D before I broke something on the A3000D and it wouldn't start.

In trying to fix one I have rendered myself Amiga less.

[blobrana]

SO are you booting with the 040 libraries on the standard CPU?
I s the HD making a noise (like it`s reading something)?

Here another schematic for the computer
http://www.amigau.com/natamiga/a-3000d.shtml

[nyteschayde]

When I plug in the accelerator in the tower the yellow screen stops flashing and I get a solid green light but no ROM screen. Only a black screen.

Without the card the screen flashes yellow. I have moved the 16MB of ZIPs which I know work from the desktop model to the tower. Moving those chips sucks.

[nyteschayde]

Oh and I have removed all hard drives. I just want to see the floppy inserting screen. I am using 3.1 ROMs which are new. I purchased them for the desktop model.

After moving the RAM and ROMs the yellow flashing sped up but that was the only difference.

[Madgun68]

When I plug in the accelerator in the tower the yellow screen stops flashing and I get a solid green light but no ROM screen. Only a black screen.

Are you moving the associated jumpers when you're doing this?

[nyteschayde]

Not sure which are the associated jumpers. I noticed that turning the fpu on (jumper says fpu on/off) stabilizes the yellow flashing. Turning it off causes the rapid yellow flashing.

The above case is using the onboard 030. Placing the 040 in the screen becomes black and the power led is constant but no boot screen.

Getting ready to quit tonight. If anybody has any ideas please let me know. I'll check the posting tomorrow.

[RexxMast]

I had an A3000D with the exact same accelerator in it. It would do the same thing that yours is doing after I installed it. After trying several things including many of the suggestions posted here like reseating chips (which is always an excellent idea), etc.

None of this solved my problem. The machine had 3.1 on it and I was at a loss as to what to do. For some reason and I don't even remember why I installed the 68040 library from the accelerators floppy in to libs, and it booted up. Curious, I kept replacing the 68040 library with newer versions till it bombed out again. The best I can remember is that I had to use a version of the 68040 library that was a few revisions old to get it to boot up, which it did just fine after that.

It is an old accelerator and apparently it does not like the newer versions of the 68040 library.

Once I brought it up to the newest version that it would tolerate, it booted and ran like a champion. Anyway, this was the problem that I had on an A3000D with the exact same accelerator that you have. The changing of the library solved my problem, and I hope that will be the same in your situation.

regards,

[nyteschayde]

I wish it were that simple. The problem is that when I try to boot with the stock 030 onboard I get nothing but a flashing yellow screen. When I try to boot with the accelerator I get a black screen. I need to be able to boot somthing to change the libraries. So until I reach that point I won't even be able to test that theory. Thanks though.