Amiga 500 - case / keyboard differences

BLTCON0

Math inside
AmiBayer
Joined
May 7, 2011
Posts
2,221
Country
Hellas (Greece)
Region
Chania, Crete
I'd never seen thus far this variation of the A500 bottom chassis.
It's probably a late (the last?) bottom chassis revision, pertaining most likely to the A500+ and similarly housed A500s.

There are 5 support stubs for the keyboard assembly instead of 3, and the topmost stub isn't as deeply dented as in previous revisions.

This causes older keyboards with a full rectangle PCB to not sink at proper depth and the plastics don't perfectly line up on the right side when snapped together.
Matching keyboard PCBs have an appropriate cutout there to circumvent the shorter dent, this is missing in older PCBs.

So, not all keyboard/chassis combinations are apparently allowed (at least not without some modifications).

Of course the other way round is fine (PCB with cutout on older chassis).
 

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