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Found 29,332 posts across 1 forum.

"Suspicious" power adapters — #2

You checked out https://68kmla.org/forums/index.php?/topic/23399-leaky-elna-capacitors-inside-powerbook-power-brick/ ? shoving in a wedge along the edge is one way to do it. Ferr…
68kMLA Hardware by Elfen Fri, 9 Jan 2015 - 01:28

"Suspicious" power adapters — #1

Got these in the mail today, $20ish for the lot. Supposedly dead, so going to reference and replace capacitors to see where that takes me. I better keep them in a box at night, si…
68kMLA Hardware by CompuNurd Fri, 9 Jan 2015 - 00:04

PowerMac G5 power supply recap — #4

Guess I have bad luck with supplies atx supplies I work on always seem to have at least one mosfet burned up.
68kMLA Hardware by pintodave Sun, 5 Oct 2014 - 15:28

Feeler: Mac Portable max-out RAM upgrade — #43

Guys, I have a discrepancy here.  Designing cards and drivers for macintosh, and the original portable developer notes list the slot like this:  but...  Guide to the macintosh…
68kMLA Troubleshooting by techknight Sat, 4 Oct 2014 - 15:43

PowerMac G5 power supply recap — #2

I am no expert, but from what I understand, heat is the issue with the logic boards, or was with mine. The chipset is a BGA chip with solder balls/pads on the bottom of it instead …
68kMLA Hardware by pintodave Sat, 4 Oct 2014 - 15:42

Feeler: Mac Portable max-out RAM upgrade — #41

my CPLD development board came in today. Cool little thing. Now just waiting on the JTAG.  better start working on the PCB layout, but I need to come up with a footprint/pin for t…
68kMLA Troubleshooting by techknight Wed, 1 Oct 2014 - 03:17

Feeler: Mac Portable max-out RAM upgrade — #39

I am sure you do Techknight.. I am sure you do!!! Sign me up to purchase your product!!! I know others that will buy too.. And of course I bet a ton of people on here.. Uni prob…
68kMLA Troubleshooting by aplmak Fri, 26 Sep 2014 - 03:18

Feeler: Mac Portable max-out RAM upgrade — #37

Hey TechKnight… So I've got a Kingston 4MB card for a 5126 and three.. yes that is three weird RAM upgrades that bring my 5120's and 5126's up to 7MB.. I haven't figured out how to…
68kMLA Troubleshooting by aplmak Fri, 26 Sep 2014 - 03:02

Feeler: Mac Portable max-out RAM upgrade — #36

I have a velcro strap rack designed for shipping TSOPs.  it has 26 I think AM29LV320 FLASH TSOPs in it.  Those TSOPs I cant use, maybe I can ship the carton to you and you can fi…
68kMLA Troubleshooting by techknight Wed, 24 Sep 2014 - 00:33

Feeler: Mac Portable max-out RAM upgrade — #35

techknight said: That was fast... RAM is already here. Looks like most suffered pin damage though, so well see. Click to expand... Dog gone it. Well that packing method i…
68kMLA Troubleshooting by trag Tue, 23 Sep 2014 - 21:02

Feeler: Mac Portable max-out RAM upgrade — #34

That was fast... RAM is already here. Looks like most suffered pin damage though, so well see.  Now I am just waiting on the CPLD stuff. Coming from china so thats going to take a…
68kMLA Troubleshooting by techknight Mon, 22 Sep 2014 - 19:37

Feeler: Mac Portable max-out RAM upgrade — #33

techknight said: Well the backlit has a timing requirement of 0-wait states. Meaning the DTACK has to be handled almost instantly upon a chip select or address strobe. Cli…
68kMLA Troubleshooting by trag Sun, 21 Sep 2014 - 18:35

Replacement feet for Apple //e? — #5

I didn't have any luck finding them on his page either... I went to an locally owned Ace Hardware here in Boise to get some keys cut for work and found some brown 3M replacements …
68kMLA Troubleshooting by pintodave Sun, 21 Sep 2014 - 18:29

AS-IS eBay Duo 230 — #5

Thanks y'all! I was afraid when I saw the box, I figured it would be full of broken plastics, as brittle as the casing can get!
68kMLA Hardware by pintodave Sun, 21 Sep 2014 - 18:23

Feeler: Mac Portable max-out RAM upgrade — #32

I found the designing cards and drivers for macintosh family online.  It appears BOTH the portable and backlit portable GLU will only decode and DTACK 5MB of address space. So for…
68kMLA Troubleshooting by techknight Sun, 21 Sep 2014 - 15:59

Feeler: Mac Portable max-out RAM upgrade — #31

the UDS/LDS data strobes go low after valid data is on the bus to be written. So when these lines get toggled, and address strobe gets toggled for a write, I know then that the dat…
68kMLA Troubleshooting by techknight Sun, 21 Sep 2014 - 14:34

Feeler: Mac Portable max-out RAM upgrade — #30

Well the backlit has a timing requirement of 0-wait states. Meaning the DTACK has to be handled almost instantly upon a chip select or address strobe. When I am outside of the 5MB …
68kMLA Troubleshooting by techknight Sun, 21 Sep 2014 - 14:17
mp.ls