Bought a Rev 7 Board

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Joined: Nov 24 2013
Posts: 202

Found this on ebay not getting any attention, so I put in a bid on it. I think the seller made a mistake with the listing because it wasn't showing up in the usual search for Apple II motherboards.

http://www.ebay.com/itm/VTG-1979-APPLE-MOTHERBOARD-LOGIC-BOARD-EARLY-SERIAL-NUMBER-820-0001-07-JOBS-MAC-/261439486782?_trksid=p2047675.l2557&ssPageName=STRK%3AMEWNX%3AIT&nma=true&si=piBf3RZzZTMIAh79Gf9AmNYwjtA%253D&orig_cvip=true&rt=nc

Don't know what the story is with all the desoldered (or never installed?) sockets. Anyone know where I can get correct replacement sockets?

I'm sure this thing is how it is for a reason, but I only wanted an example of a Rev 07(the long, long term goal is get a representative of each 820-0001-xx part number (I'll skip on the all variations within, unless I stumble on it like I did with the black slot Rev 04).

Interestingly the date code on it is 20-something weeks later than my Rev 04.. is that all the time it took to go through 3 more revisions?

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MarkO's picture
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Joined: Dec 10 2011
Posts: 667
Re: Bought a Rev 7 Board

Fascinating....

I wonder if this was an Early Production Run Rev-07 board...

I see some Solder in some of the Holes in the D0 and D8 ROMs positions..

MarkO

chaosdesigns's picture
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Joined: Apr 6 2014
Posts: 8
Re: Bought a Rev 7 Board

Indeed, It definitely looks like it has a story.....

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Joined: Nov 24 2013
Posts: 202
Re: Bought a Rev 7 Board

Yeah I agree the story on this one must be interesting. I mean, straightforward parts scavenging -- why go for the sockets? I was thinking maybe somebody trying to do up an Apple I replica (even though these wouldn't be correct), but then why remove the game port? If scavenging for a ravaged Apple II board, why remove them in a linear fashion like that instead of just the random ones you need? The pattern is what makes it interesting.

Online
Joined: Oct 9 2011
Posts: 1063
Re: Bought a Rev 7 Board

I think someone was troubleshooting a signal short on the board, or it was partially under water or something that caused a section of sockets to corrode and they started removing and never finished. Notice the rework wiring on the back as well...

chaosdesigns's picture
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Joined: Apr 6 2014
Posts: 8
Re: Bought a Rev 7 Board

Maybe someone was practicing their desoldering skills.

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Joined: Dec 20 2003
Posts: 359
Re: Bought a Rev 7 Board

Looks like someone was recycling some sockets. They started at one end and stopped when they had enough for the next few projects. I've known a few people that would have done that. Sometimes they'd pull parts until they got tired or something came up.