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Author Topic: A3000 Failure  (Read 1651 times)

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Offline Noster

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Re: A3000 Failure
« on: March 16, 2005, 07:56:37 PM »
Hi,

> When I remove daughterboard the screen becomes yellow (this is normal, i know it was just for testing purpose)

So the CPU is still functional and the ROM is accessed and the earliest bootcode is processed, when a hardware defect is found.
Have you tested the other custom chips ?
I think that any of the other chips is dead (SDMAC, RAMSEY, AGNUS) -- have you replaced the new Buster with your old one ? -- I would also test the CIA's and the SCSI-chip. I was searching for an error in my A3000T that fails to boot (grey screen) and sometimes ended with a yellow screen and it seemed to be a defective SCSI-controler chip. After replacing it with a newer revision, the A3000T works again.

Noster

DON\\\'T PANIC
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Offline Noster

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Re: A3000 Failure
« Reply #1 on: March 17, 2005, 09:21:07 AM »
Hi,

> why all the other chips would be dead ?

Not ALL chips, ANY of these chips ;-)

> I  have also thought to DMAC because it is the chip whitch is overheating with the A3640 but i don't have spare for this chip.

A new DMAC (390537-02) may be ordered by Vesalia (http://www.vesalia.de) for 3,36 EUR + shipping.

Noster
DON\\\'T PANIC
    Douglas Adams - Hitch Hiker\\\'s Guide to the Galaxis