My amiga 4000 don't boot :-(

[xilly]

Hello everyone

So here is the thing

I have an Amiga 4000 with CF card, domino video and network card

After installing the network card, I noticed that after few minute the Amiga was freezing (workbench 3.9 frozen)

when it was almost impossible to reboot

So I remove the network card, but it freeze again and not it doe not want to boot

So here was it happening
When I switch on the Amiga, the power led and HD led light up
then after 20 seconds the hd led switch off and nothing happen
The floppy drive to not start at any moment

no return on the screen neither

I cleaned the memory and also I change the cpu card and processor (I have 2 of them) but nothing change

what worries me is that if I remove the cpu card, then the boot procedure is exactly the same

Finally clicking on the 2 buttons on the mouse seems to have no effect

Do I need to change the whole amiga motherboard?

tx for the help

william

 

[RichyV]

Battery leakage? Damage to capacitors? Have either of these ever been replaced?

 

[Hivernaal]

Hello William.
At first remove eveything except chip ram and CPU board (if it's a 060 board verify you got the right library in libs: in your CF with wuae). Verify your PSU too.
If you still have a black screen, there is few solutions :
-one CIA doesn't liked the new board (and died...)
-U208 died too (usual defect thing on A4000)
-... other things need to search
verify your caps
and be sure that every chip is well socketed.
you can send me a PM if needed.

 

[xilly]

Hello RichyV

I removed the battery when I got the Amiga and lean the board around

Hello Hivernaal
By the way I'm French too

I removed all the cards and disconnect the ide drive yesterday night but it did not change a thing

How can I check the PSU? check the voltage?

I will check also that all chip are well socketed

however a lot of thing seems to be beyond my knowledge so maybe I should start to find an other mobo

 

[AndyLandy]

Start with the basics. Strip the system down to just the motherboard, Chip RAM and a CPU card, ideally an A3630 if you have one (checking J100 and J104 as appropriate). Re-seat the Chip RAM and CPU card, make sure the connectors are all clean. If you're using Kickstart 3.1, you'll need to give the system plenty of time to finish polling the IDE interface (or you can add an IDE terminator)

If you can get that all up and running, slowly start adding things back. Fast RAM, Zorro riser, CPU accelerator, floppy and hard disk drives, Zorro cards and see how far you get. There's a fair chance you'll get all the way and all will be working again. If not, you should at least start to be able to pin down where the fault is.

Let us know how you get on with that and we'll guide you further as we know more about the issue.

Good luck!

 

[xilly]

My amiga is alive!!!!

Ok so i cleaned the connection, reseat the chip ram and so on

And it startedn then I add one by one all the cards

Now it's working perfectly with scan doubler connect to my domino and my network card


I tried to reply with the maiga o nthe forum but I got a guru error

only thing that do not work is my Cyberstorm card with a 68040 at 40 Mhz
I orderd new ram, maybe there is an issue with the RAM on the board

Tx everyone from your help

William

 

[edd_jedi]

My Cyberstorm 040 won't accept more than 64MB RAM for some reason, any more and it won't boot (regardless of the jumper settings.)

 

[AndyLandy]

only thing that do not work is my Cyberstorm card with a 68040 at 40 Mhz
I orderd new ram, maybe there is an issue with the RAM on the board

Try it without any FastRAM at all. It'll be dog-slow, but it should still boot. If that works, slowly add FastRAM back on to the card until it stops working.