A4000D Rebuild

More of a rebuild than a repair
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First up a perfectly working Amiga 4000 EC 030
used for reference purposes. Quite useful for
conector information, jumper settings etc

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Images of the inside of a healthy Amiga 4000 complete
with Cybervision 64 graphics card..

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Locating those jumpers on the healthy A4000

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The all important SuperBuster and healthy SIMM slots

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OK Enter the rather sad A4000 with various bits missing

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Daughter board is lying on the top of the previous users
notes on the history of the machine. There is no hard drive
or hard drive cradle. The floppy cables are loose. There is no
power connected and no CD Rom, though the front plastic cover
is inside the machine.

Most importantly there is no processor board or ROM chips
This machine is currently dead in the water

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There is evidence of previous battery issues. I had already
removed the battery. The Buster is 11 so that is fine
Though, the first SIMM socket looks suspect and this will need
further attention no doubt

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Jumper settings look fine. Note the rogue screw top left picture

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I had a couple of spare 030 processor boards handy
along with a damaged motherboard with the needed ROMs

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Just recording the status and location of how the ROM fit

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So the ROMs find there way onto the A4000 motherboard
Snug as the old bug in a rug. Fingers crossed they are working

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Time to re-attach those all important connectors to the motherboard

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Next up I reconnected the power supply and processor board

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In goes the daughterboard and floppy disk ribbon. I also
reconnected power to the floppy drive. Sadly no hard drive
cradle at this time so that will have to wait...

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And fired up first time... Not without problems though
Unfortunately the mouse only works from the buttons
and there is something very wrong with the memory on
this machine. Saying that, the signs are very good
that another A4000D will return soon fully functioning


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Last updated 12:26 21/03/2010