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#1 2018-11-25 16:26:19

Theclassic
Member
Registered: 2017-10-09
Posts: 21

Is this a 128k or a 512k? Seems to be an upgraded 128k.

Hey everyone, so I just traded my Macintosh SE. Now I've noticed these specific machines spiking up in price recently, and it was hard for me to let it go. Not just because of the price, but most of all; because of how reliable that Mac was.
But anyway, I traded my Macintosh SE for what I believe is a Macintosh 128k that had been upgraded to a 512k. Not sure about how rare the upgrade itself is, let alone the upgraded computer. Basically, it has a 128k serial number, but on the back it has a label that says 512k. It could be as simple as a Macintosh 128k front, and a 512k back. All open up the machine it before too long to figure out what's on the inside smile
I hope you guys can figure out and tell me what this machine actually is officially. When I tell people about this machine, what should I refer to it as? Thanks everyone! (I'll add pics asap)

15431637517905648101609427340908.jpg

15431639750064887752823614846831.jpg

15431640392708957982320623022357.jpg

15431641172177952935896682837189.jpg

Last edited by Theclassic (2018-11-25 16:42:48)

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#2 2018-11-27 02:42:32

cc333
Member
From: North S.F. Bay Area, CA
Registered: 2014-05-23
Posts: 597

Re: Is this a 128k or a 512k? Seems to be an upgraded 128k.

There was, if I recall, an official, Apple-sanctioned upgrade that allowed one to upgrade a 128k to a 512k by replacing the logic board and rear bucket (hence the 512k sticker on back).

It sounds kinda like you may have one of those units, but it's also possible that someone cobbled it together using spare parts, and not giving any thought as to which model they were from (aside from that label and the extra RAM, the 128k and 512k are identical, and thus all parts are interchangeable).

c


Main Macs: Early '09 Mac Pro, Mid '12 MacBook Pro 13"
Secondary Macs: Early '08 Mac Pro, Mid '12 MacBook Pro 15"
Playthings: Mac SE/30, 3.0 GHz Mavericks-based HackServe, Many others....
Desired: Lisa, Kanga PowerBook G3, Apple IIc, Apple II, Spare parts, etc.

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#3 2018-11-27 19:17:04

Theclassic
Member
Registered: 2017-10-09
Posts: 21

Re: Is this a 128k or a 512k? Seems to be an upgraded 128k.

Ok smile very cool!
Would you know if the internals are from a 128k or a 512k? (at least some of them), such as the CRT, logic board, ect? If I send a picture, of course smile
I just want to know what to refer to my machine as.
Thanks again!
     -Tyler

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#4 2018-11-28 16:36:14

mcdermd
Member
From: Corvallis, OR
Registered: 2014-05-12
Posts: 1,010
Website

Re: Is this a 128k or a 512k? Seems to be an upgraded 128k.

Have a look at the RAM chips (the two rows of 8 at F5 to G13 on the logic board)

If you see them marked with "4164" it is a 128K
If you see them marked with "41256" or "50256", etc it is a 512K

Really, you're looking for "64" or "256"


Daily Drivers: 27" iMac 2.8 GHz Quad-Core i7 (Late 2009), 21.5" iMac 2.7GHz Quad-Core i5 (Late 2013), 11" Macbook Air 1.6 GHz i5 (Mid-2011)
See the restored heroes here.

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#5 2018-11-28 20:06:21

Theclassic
Member
Registered: 2017-10-09
Posts: 21

Re: Is this a 128k or a 512k? Seems to be an upgraded 128k.

Ok thanks so much! I'll have a look once I get home! smile

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#6 2018-11-29 19:30:54

Theclassic
Member
Registered: 2017-10-09
Posts: 21

Re: Is this a 128k or a 512k? Seems to be an upgraded 128k.

Looks like I got a 512k motherboard!

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ThinkClassic specialises in the use, maintenance, repair, restoration and modification of vintage computers and peripherals.