I think my A4000 may be dead.

[filson]

yep, crystals are very sensitive. some will even die under transport. a dead crystal will give 680x0 errors dependent uppon the design of the accelerator. otherwise it will just lock up the machine at boot.

[filson]

once read that they can identify errors like the guru or the colors of the startup screen. check the amiga.org faq for more info.

[filson]

maybe this can help too:
http://home.arcor.de/r69/amiga/A4k-HW3.html#power-upself-test
http://www.allexperts.com/previousqv.asp?QuestionID=2778721

they might not apply, contain duplicate information or just be boring, but thats for you to deside.
additionally you can try to get your hands on a copy of the Amiga hardware reference manual. It should contain all the boot codes. (or was it the Rom Kernal reference manual ?! :-) )

[filson]

ShadesOfGrey wrote:
@filson

I know what the colors signify (looked them up last night...  err...  This morning).  


But the pulsing LED, IIRC, has some significance as well.  I just can't find anything that tells me exactly what 10 short pulses + 1 longer one means.  

yes i remember. had something similar with an Apollo 060 card. just can't seem to find a link on the net for it. sorry.