Need help identifying this Apple ][+

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Last seen: 19 hours 34 min ago
Joined: Sep 19 2019 - 11:44
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Need help identifying this Apple ][+

I have several Apple ][+ machines I am trying to return to functional...   this one is missing it's badge on the cover, and the internals look different from all the others.

I am including some photos to show what I mean..

For example, this logic board doesn't have the 74LS02 at A14.

It has these 16K Memory Select chips along side the memory banks.

There is no resistor near the power connector.

There are no disc capicitors in between the slots.

The case screws are recessed and steel, not black.

It came with 16K RAM, and someone added 32K more, plus a 32K Saturn RAM card.

It has 2 x 8T28 chips at H10.

Here's the sticker on the bottom.

 

Well, what can you tell me about this Apple?

 

Currently I am trying to repair the power supply, and also get this computer to boot from a Disk ][ drive (and yes, the drive and card are both good.  What happens is when I attempt to boot, the drive corrupts/erases the floppy.  If I take the drive and controller to a different Apple ][+, all works well.)

 

 

 

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Last seen: 18 hours 53 min ago
Joined: Dec 20 2003 - 10:38
Posts: 387
It's a rev 4 apple II not a

It's a rev 4 apple II not a II+ although it has Applesoft ROMs right now.

A lot of integer basic machines had their ROMs replaced with Applsoft ROMs.

Manzana2's picture
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Not an Apple II

It's an Early Apple II+ (A2S2)

 

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Power Supply failed; silver case

The power supply on this has failed.    It is quite different from the "gold" box power supplies.  Should I attempt to repair?  Any value in keeping it as is?  Or should I gut it and replace the contents with a Reactive Micro Universal Power Supply?

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Manzana2 wrote:It's an Early

Manzana2 wrote:

It's an Early Apple II+ (A2S2)

 

Correct. I somehow misread the number.

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There isn't a lot of value in

There isn't a lot of value in a rev4 ][+ these days (you aren't going to sell it and retire to your own private island or anything), but I would still probably repair the supply or at least not replace its guts with something different.  If you just want to use it, but a whole other power supply and keep the original one for later.

 

 

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